The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3111 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3111-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                    Thorsten Alteholz     September 15, 2022                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : mod-wsgi     Version        : 4.6.5-1+deb10u1     CVE ID         : CVE-2022-2255


    An issue has been found in mod-wsgi, a Python WSGI adapter module for     Apache. A request from an untrusted proxy does not remove the X-Client-IP     header and thus allowing this header to be passed to the target WSGI application.



    For Debian 10 buster, this problem has been fixed in version     4.6.5-1+deb10u1.

    We recommend that you upgrade your mod-wsgi packages.

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

    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 this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2022:4013-1 advisory.

  - A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an     untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application     because the condition to remove it is missing. (CVE-2022-2255)

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-2025:4791 advisory.

    Python is an interpreted, interactive, object-oriented programming language, which includes modules,     classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to     many system calls and libraries, as well as to various windowing systems.

    Security Fix(es):

    * mod_wsgi: Trusted Proxy Headers Removing Bypass (CVE-2022-2255)

    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 Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0340 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2022-2255:
    A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an     untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application     because the condition to remove it is missing.

Tenable has extracted the preceding description block directly from the Tencent 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 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2022:4010-1 advisory.

  - A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an     untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application     because the condition to remove it is missing. (CVE-2022-2255)

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 a vulnerability as referenced in the SUSE-SU-2022:4488-1 advisory.

  - A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an     untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application     because the condition to remove it is missing. (CVE-2022-2255)

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

According to the versions of the mod-wsgi packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an     untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application     because the condition to remove it is missing. (CVE-2022-2255)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

It is, therefore, affected by a vulnerability as referenced in the ALAS2HTTPD_MODULES-2023-001 advisory.

    A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an     untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application     because the condition to remove it is missing. (CVE-2022-2255)

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 Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-4791 advisory.

    mod_wsgi     [4.7.1-7.1]
    - Resolves: RHEL-87514 - CVE-2022-2255 python39:3.9/mod_wsgi: Trusted       Proxy Headers Removing Bypass

    numpy     python39     python3x-pip     python3x-setuptools     python3x-six     python-cffi     python-chardet     python-cryptography     python-idna     python-lxml     python-ply     python-psutil     python-psycopg2     python-pycparser     python-PyMySQL     python-pysocks     python-requests     python-toml     python-urllib3     python-wheel     PyYAML     scipy

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 AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2025:4791 advisory.

    * mod_wsgi: Trusted Proxy Headers Removing Bypass (CVE-2022-2255)

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 MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2025-9939:01 advisory.

    * mod_wsgi: Trusted Proxy Headers Removing Bypass (CVE-2022-2255)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5551-1 advisory.

    It was discovered that mod-wsgi did not correctly remove the X-Client-IP header when processing requests     from untrusted proxies. A remote attacker could use this issue to pass the header to WSGI applications,     contrary to expectations.

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

  - A vulnerability was found in mod_wsgi. The X-Client-IP header is not removed from a request from an     untrusted proxy, allowing an attacker to pass the X-Client-IP header to the target WSGI application     because the condition to remove it is missing. (CVE-2022-2255)

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

ID	Name	Product	Family	Published	Updated	Severity
165216	Debian dla-3111 : libapache2-mod-wsgi - security update	Nessus	Debian Local Security Checks	9/16/2022	1/22/2025	high
167787	SUSE SLES12 Security Update : apache2-mod_wsgi (SUSE-SU-2022:4013-1)	Nessus	SuSE Local Security Checks	11/17/2022	7/13/2023	high
235728	RHEL 8 : python39:3.9 (RHSA-2025:4791)	Nessus	Red Hat Local Security Checks	5/12/2025	6/5/2025	high
239054	TencentOS Server 3: python39:3.9 (TSSA-2025:0340)	Nessus	Tencent Local Security Checks	6/16/2025	12/4/2025	high
167754	SUSE SLES15 Security Update : apache2-mod_wsgi (SUSE-SU-2022:4010-1)	Nessus	SuSE Local Security Checks	11/17/2022	7/14/2023	high
168782	SUSE SLES15 Security Update : apache2-mod_wsgi (SUSE-SU-2022:4488-1)	Nessus	SuSE Local Security Checks	12/15/2022	7/14/2023	high
171170	EulerOS 2.0 SP8 : mod-wsgi (EulerOS-SA-2023-1328)	Nessus	Huawei Local Security Checks	2/8/2023	9/5/2023	high
181936	Amazon Linux 2 : mod_wsgi (ALASHTTPD_MODULES-2023-001)	Nessus	Amazon Linux Local Security Checks	9/27/2023	12/11/2024	high
235784	Oracle Linux 8 : python39:3.9 (ELSA-2025-4791)	Nessus	Oracle Linux Local Security Checks	5/13/2025	9/11/2025	high
235838	AlmaLinux 8 : python39:3.9 (ALSA-2025:4791)	Nessus	Alma Linux Local Security Checks	5/13/2025	5/13/2025	high
283168	MiracleLinux 8 : python39:3.9 (AXSA:2025-9939:01)	Nessus	Miracle Linux Local Security Checks	1/13/2026	1/20/2026	high
163860	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : mod-wsgi vulnerability (USN-5551-1)	Nessus	Ubuntu Local Security Checks	8/5/2022	8/28/2024	high
229985	Linux Distros Unpatched Vulnerability : CVE-2022-2255	Nessus	Misc.	3/5/2025	8/20/2025	high

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