Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a remote client to identify security tokens or credentials used internally by a web application using Squid for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links generated by Squid by configuring squid.conf with email_err_data off.

This information disclosure vulnerability in Squid carries the maximum severity CVSS score of 10. While no evidence of exploitation has been observed, we recommend patching.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:21066 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:21090 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4369 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4369-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                   Bastien Roucaris     November 11, 2025                             https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : squid     Version        : 4.13-10+deb11u6     CVE ID         : CVE-2025-59362 CVE-2025-62168     Debian Bug     : 1117048 1118341

    Squid a popular proxy server was affected by multiple vulnerabilities

    CVE-2025-59362

        Squid mishandles ASN.1 encoding of long SNMP OIDs. This occurs in         asn_build_objid in lib/snmplib/asn1.c.

    CVE-2025-62168

        A failure to redact HTTP authentication credentials in error         handling allows information disclosure. The vulnerability allows a         script to bypass browser security protections and learn the         credentials a trusted client uses to authenticate.
        This potentially allows a remote client to identify security tokens         or credentials used internally by a web application using Squid for         backend load balancing. These attacks do not require Squid to         be configured with HTTP authentication

    For Debian 11 bullseye, these problems have been fixed in version     4.13-10+deb11u6.

    We recommend that you upgrade your squid packages.

    For the detailed security status of squid please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/squid

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:21002 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:20935 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2025:4026-1 advisory.

    - CVE-2025-62168: Fixed failure to redact HTTP authentication credentials in error handling leading to     information disclosure (bsc#1252281)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2025:4029-1 advisory.

    - CVE-2025-62168: Fixed failure to redact HTTP authentication credentials in error handling leading to     information disclosure (bsc#1252281)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:19967 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:19398 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to its self-reported version number,the version of Squid installed on the remote host is prior to 7.2. It is, therefore, affected by an Information Disclosure due to a failure to redact HTTP Authentication credentials.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2025:3902-1 advisory.

    - CVE-2025-62168: Fixed proxy auth data visible to scripts (bsc#1252281).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6047 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6047-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     October 30, 2025                      https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : squid     CVE ID         : CVE-2025-62168

    Leonardo Giovanni discovered that missing redaction of authentication     data in the Squid proxy caching server could result in information     disclosure.

    For the oldstable distribution (bookworm), this problem has been fixed     in version 5.7-2+deb12u4.

    For the stable distribution (trixie), this problem has been fixed in     version 6.13-2+deb13u1.

    We recommend that you upgrade your squid packages.

    For the detailed security status of squid please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/squid

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of Squid on the remote host is prior to 7.2. It is, therefore, affected by an information disclosure vulnerability:

  - Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication     credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser     security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a     remote client to identify security tokens or credentials used internally by a web application using Squid for     backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The     vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links     generated by Squid by configuring squid.conf with email_err_data off. (CVE-2025-62168)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-7845-1 advisory.

    Leonardo Giovannini discovered that Squid failed to redact HTTP Authentication credentials in a default     configuration. An attacker could possibly use this issue to obtain sensitive information.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:19167 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:19107 advisory.

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:19114 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:19115 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-19107 advisory.

    libecap     squid     [7:4.15-10.9]
    - Resolves: RHEL-122484 - squid: Squid vulnerable to information disclosure via       authentication credential leakage in error handling (CVE-2025-62168)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2025:19118 advisory.

    Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.

    Security Fix(es):

    * squid-cache: Squid vulnerable to information disclosure via authentication credential leakage in error     handling (CVE-2025-62168)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of squid installed on the remote host is prior to 3.5.20-17. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-3045 advisory.

    Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP     authentication credentials in error handling allows information disclosure.  . This potentially allows a     remote client to identify security tokens or credentials used internally by a web application using Squid     for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication.
    The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator     mailto links generated by Squid by configuring squid.conf with email_err_data off. (CVE-2025-62168)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1238 advisory.

    Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP     authentication credentials in error handling allows information disclosure.  . This potentially allows a     remote client to identify security tokens or credentials used internally by a web application using Squid     for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication.
    The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator     mailto links generated by Squid by configuring squid.conf with email_err_data off. (CVE-2025-62168)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 41 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-252c9276b3 advisory.

    - security fixes

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP     authentication credentials in error handling allows information disclosure. The vulnerability allows a     script to bypass browser security protections and learn the credentials a trusted client uses to     authenticate. This potentially allows a remote client to identify security tokens or credentials used     internally by a web application using Squid for backend load balancing. These attacks do not require Squid     to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround,     disable debug information in administrator mailto links generated by Squid by configuring squid.conf with     email_err_data off. (CVE-2025-62168)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-f0452df4e2 advisory.

    - security fixes

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
275154	RHEL 9 : squid (RHSA-2025:21066)	Nessus	Red Hat Local Security Checks	high
275152	RHEL 8 : squid:4 (RHSA-2025:21090)	Nessus	Red Hat Local Security Checks	high
274815	Debian dla-4369 : squid - security update	Nessus	Debian Local Security Checks	high
274807	RHEL 10 : squid (RHSA-2025:21002)	Nessus	Red Hat Local Security Checks	high
274778	RHEL 9 : squid (RHSA-2025:20935)	Nessus	Red Hat Local Security Checks	high
274710	SUSE SLES15 / openSUSE 15 Security Update : squid (SUSE-SU-2025:4026-1)	Nessus	SuSE Local Security Checks	high
274702	SUSE SLES15 Security Update : squid (SUSE-SU-2025:4029-1)	Nessus	SuSE Local Security Checks	high
274580	RHEL 8 : squid:4 (RHSA-2025:19967)	Nessus	Red Hat Local Security Checks	high
274476	RHEL 8 : squid:4 (RHSA-2025:19398)	Nessus	Red Hat Local Security Checks	high
115020	Squid < 7.2 Information Disclosure	Web App Scanning	Component Vulnerability	high
272146	SUSE SLES15 Security Update : squid (SUSE-SU-2025:3902-1)	Nessus	SuSE Local Security Checks	high
272076	Debian dsa-6047 : squid - security update	Nessus	Debian Local Security Checks	high
272042	Squid < 7.2 Information Disclosure (SQUID-2025:2)	Nessus	Firewalls	critical
271954	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.04 / 25.10 : Squid vulnerability (USN-7845-1)	Nessus	Ubuntu Local Security Checks	critical
271922	RHEL 7 : squid (RHSA-2025:19167)	Nessus	Red Hat Local Security Checks	critical
271861	AlmaLinux 8 : squid:4 (ALSA-2025:19107)	Nessus	Alma Linux Local Security Checks	critical
271849	RHEL 9 : squid (RHSA-2025:19114)	Nessus	Red Hat Local Security Checks	critical
271848	RHEL 9 : squid (RHSA-2025:19115)	Nessus	Red Hat Local Security Checks	critical
271800	Oracle Linux 8 : squid:4 (ELSA-2025-19107)	Nessus	Oracle Linux Local Security Checks	critical
271799	RHEL 9 : squid (RHSA-2025:19118)	Nessus	Red Hat Local Security Checks	critical
271778	Amazon Linux 2 : squid, --advisory ALAS2-2025-3045 (ALAS-2025-3045)	Nessus	Amazon Linux Local Security Checks	high
271749	Amazon Linux 2023 : squid (ALAS2023-2025-1238)	Nessus	Amazon Linux Local Security Checks	high
271704	Fedora 41 : squid (2025-252c9276b3)	Nessus	Fedora Local Security Checks	critical
271681	Linux Distros Unpatched Vulnerability : CVE-2025-62168	Nessus	Misc.	critical
271502	Fedora 42 : squid (2025-f0452df4e2)	Nessus	Fedora Local Security Checks	critical

Detections

Analytics

CVE-2025-62168

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

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critical

critical

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critical

critical

critical

critical

critical

high

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