The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8487-1 advisory.

    Andrew Nesbitt discovered that curl could reuse an existing live connection during STARTTLS-based     connection upgrades even when the TLS configuration did not match. A remote attacker could possibly use     this issue to cause curl to use an unintended TLS configuration. (CVE-2026-8286)

    Muhamad Arga Reksapati discovered that curl incorrectly reused connections for Negotiate-authenticated     requests when different services were involved. A remote attacker could possibly use this issue to access     resources authenticated for another service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS,     Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-8458)

    It was discovered that curl incorrectly handled cookie parsing in certain circumstances. A remote attacker     could possibly use this issue to set cookies that would be transmitted to unrelated third-party domains.
    This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu     24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-8924)

    Joshua Rogers discovered that curl could double-free a GSASL context when handling SASL authentication. A     remote attacker could possibly use this issue to cause a denial of service, or execute arbitrary code.
    This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS.
    (CVE-2026-8925)

    Joshua Rogers discovered that curl could select the wrong password from a .netrc file when a username was     specified in the URL without a password. A remote attacker could possibly use this issue to obtain     sensitive information. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-8926)

    Ady Elouej discovered that curl did not clear proxy authentication state between requests when reusing a     handle with environment-variable proxy configuration. A remote attacker could possibly use this issue to     obtain sensitive credentials. (CVE-2026-8927)

    Guannan Wang, Zhanpeng Liu, Jiashuo Liang, and Guancheng Li discovered that curl did not properly clear     proxy authentication credentials when instructed to do so. A remote attacker could possibly use this issue     to obtain sensitive credentials. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS.
    (CVE-2026-9079)

    Joshua Rogers discovered that curl contained a use-after-free when curl_easy_pause() was called within the     event-based socket callback. A remote attacker could possibly use this issue to cause a denial of service     or possibly execute arbitrary code. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS.
    (CVE-2026-9080)

    Eunsoo Kim discovered that curl could send early data on a resumed TLS session before enforcing     certificate verification failure. A machine-in-the-middle attacker could possibly use this issue to obtain     sensitive information. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-9545)

    Joshua Rogers discovered that curl did not properly reject host key type mismatches when using the SSH key     callback for SCP and SFTP transfers. A machine-in-the-middle attacker could possibly use this issue to     impersonate a trusted server. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 25.10,     and Ubuntu 26.04 LTS. (CVE-2026-9547)

Tenable has extracted the preceding description block directly from the Ubuntu 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 version of libcurl installed on the remote host is 7.46.0 prior to 8.21.0. It is, therefore, affected by a cookie injection vulnerability:

  - A flaw in curl's cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass     the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl     subsequently scopes and transmits to unrelated third-party domains. (CVE-2026-8924)

Note that Nessus has not tested for this issue 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.

  - A flaw in curl's cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass     the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl     subsequently scopes and transmits to unrelated third-party domains. (CVE-2026-8924)

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2925-1 advisory.

    This update for curl fixes the following issues

    - CVE-2026-4873: connection reuse ignores TLS requirement (bsc#1262631).
    - CVE-2026-8286: wrong STARTTLS connection reuse (bsc#1268402).
    - CVE-2026-8458: wrong reuse for different services (bsc#1268407).
    - CVE-2026-8924: traling dot domain super cookie (bsc#1268409).
    - CVE-2026-8927: env-set cross-proxy Digest auth state leak (bsc#1268413).
    - CVE-2026-9079: stale proxy password leak (bsc#1268415).
    - CVE-2026-9080: UAF after pause in socket callback (bsc#1268416).
    - CVE-2026-9545: exposing HTTP/3 early data (bsc#1268417).
    - CVE-2026-9547: SSH improper host validation (bsc#1268420).
    - CVE-2026-10536: HTTP/2 stream-dependency tree UAF (bsc#1268422).
    - CVE-2026-12064: proto-default skips SSH verification (bsc#1268427).

Tenable has extracted the preceding description block directly from the SUSE 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 version of curl installed on the remote host is 7.46.0 prior to 8.21.0. It is, therefore, affected by a cookie injection vulnerability:

  - A flaw in curl's cookie parsing logic allows a malicious HTTP server to set super cookies that bypass the     Public Suffix List check. (CVE-2026-8924)

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 packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2926-1 advisory.

    This update for curl fixes the following issues

    - CVE-2026-8286: wrong STARTTLS connection reuse (bsc#1268402).
    - CVE-2026-8458: wrong reuse for different services (bsc#1268407).
    - CVE-2026-8924: traling dot domain super cookie (bsc#1268409).
    - CVE-2026-8927: env-set cross-proxy Digest auth state leak (bsc#1268413).
    - CVE-2026-9079: stale proxy password leak (bsc#1268415).
    - CVE-2026-9080: UAF after pause in socket callback (bsc#1268416).
    - CVE-2026-9545: exposing HTTP/3 early data (bsc#1268417).
    - CVE-2026-9547: SSH improper host validation (bsc#1268420).
    - CVE-2026-10536: HTTP/2 stream-dependency tree UAF (bsc#1268422).
    - CVE-2026-12064: proto-default skips SSH verification (bsc#1268427).

Tenable has extracted the preceding description block directly from the SUSE 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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3043-1 advisory.

    This update for curl fixes the following issues

    - CVE-2026-8286: wrong STARTTLS connection reuse (bsc#1268402).
    - CVE-2026-8458: wrong reuse for different services (bsc#1268407).
    - CVE-2026-8924: traling dot domain super cookie (bsc#1268409).
    - CVE-2026-8927: env-set cross-proxy Digest auth state leak (bsc#1268413).
    - CVE-2026-9079: stale proxy password leak (bsc#1268415).
    - CVE-2026-9080: UAF after pause in socket callback (bsc#1268416).
    - CVE-2026-9545: exposing HTTP/3 early data (bsc#1268417).
    - CVE-2026-9547: SSH improper host validation (bsc#1268420).
    - CVE-2026-10536: HTTP/2 stream-dependency tree UAF (bsc#1268422).
    - CVE-2026-12064: proto-default skips SSH verification (bsc#1268427).

Tenable has extracted the preceding description block directly from the SUSE 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 openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21272-1 advisory.

    This update for curl fixes the following issues

    - CVE-2026-8286: wrong STARTTLS connection reuse (bsc#1268402).
    - CVE-2026-8458: wrong reuse for different services (bsc#1268407).
    - CVE-2026-8924: traling dot domain super cookie (bsc#1268409).
    - CVE-2026-8927: env-set cross-proxy Digest auth state leak (bsc#1268413).
    - CVE-2026-9079: stale proxy password leak (bsc#1268415).
    - CVE-2026-9080: UAF after pause in socket callback (bsc#1268416).
    - CVE-2026-9545: exposing HTTP/3 early data (bsc#1268417).
    - CVE-2026-9547: SSH improper host validation (bsc#1268420).
    - CVE-2026-10536: HTTP/2 stream-dependency tree UAF (bsc#1268422).
    - CVE-2026-12064: proto-default skips SSH verification (bsc#1268427).

Tenable has extracted the preceding description block directly from the SUSE 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 Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-e691fbbfe7 advisory.

    - Fix trailing dot domain super cookie (CVE-2026-8924)
    - Fix SSH improper host validation (CVE-2026-9547)
    - Fix password leak with netrc and user in URL (CVE-2026-8926)
    - Fix cross-origin Digest auth state leak (CVE-2026-11856)
    - Fix cross-proxy Digest auth state leak (CVE-2026-7168)
    - Fix OCSP stapling bypass with Apple SecTrust (CVE-2026-7009)

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	Published	Updated	Severity
324983	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : curl vulnerabilities (USN-8487-1)	Nessus	Ubuntu Local Security Checks	7/3/2026	7/8/2026	critical
326236	libcurl 7.46.0 < 8.21.0 Super Cookie PSL Bypass (CVE-2026-8924)	Nessus	Misc.	7/10/2026	7/13/2026	critical
322435	Linux Distros Unpatched Vulnerability : CVE-2026-8924	Nessus	Misc.	6/24/2026	7/25/2026	critical
326957	SUSE SLED15 / SLES15 Security Update : curl (SUSE-SU-2026:2925-1)	Nessus	SuSE Local Security Checks	7/15/2026	7/15/2026	critical
323006	Curl 7.46.0 < 8.21.0 Trailing Dot Domain Super Cookie	Nessus	Misc.	6/26/2026	7/8/2026	critical
326933	SUSE SLES15 Security Update : curl (SUSE-SU-2026:2926-1)	Nessus	SuSE Local Security Checks	7/15/2026	7/15/2026	critical
327284	SUSE SLED15 / SLES15 Security Update : curl (SUSE-SU-2026:3043-1)	Nessus	SuSE Local Security Checks	7/16/2026	7/16/2026	critical
326418	openSUSE 16: curl / curl-fish-completion / curl-zsh-completion / libcurl-devel / etc (openSUSE-SU-2026:21272-1)	Nessus	SuSE Local Security Checks	7/12/2026	7/12/2026	critical
331599	Fedora 44 : curl (2026-e691fbbfe7)	Nessus	Fedora Local Security Checks	8/2/2026	8/2/2026	medium

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