{"cve":"CVE-2022-2255","nvd":{"published":"2022-08-25T18:15:09.993","modified":"2026-06-17T04:41:34.243","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","score":7.5},"cwes":["CWE-345","CWE-348"],"references":["https://github.com/GrahamDumpleton/mod_wsgi/blob/4.9.2/src/server/mod_wsgi.c#L13940-L13941","https://github.com/GrahamDumpleton/mod_wsgi/blob/4.9.2/src/server/mod_wsgi.c#L14046-L14082","https://lists.debian.org/debian-lts-announce/2022/09/msg00021.html","https://modwsgi.readthedocs.io/en/latest/release-notes/version-4.9.3.html","https://github.com/GrahamDumpleton/mod_wsgi/blob/4.9.2/src/server/mod_wsgi.c#L13940-L13941"],"products":["debian:debian_linux","modwsgi:mod_wsgi"],"source":"nvd","synced_at":"2026-10-19T21:35:14.992143698+00:00"},"epss":{"cve":"CVE-2022-2255","score":0.00939,"percentile":0.60933,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-7527-8855-9cf8","url":"https://osv.dev/vulnerability/GHSA-7527-8855-9cf8","summary":"Incorrect header handling in mod-wsgi","modified":"2024-09-25T20:23:43.629378Z","packages":[{"ecosystem":"PyPI","name":"mod-wsgi","purl":"pkg:pypi/mod-wsgi","ranges":["<4.9.3"],"fixed":["4.9.3"]}]},{"id":"PYSEC-2022-254","url":"https://osv.dev/vulnerability/PYSEC-2022-254","summary":"","modified":"2023-12-06T01:01:57.549700Z","packages":[{"ecosystem":"PyPI","name":"mod-wsgi","purl":"pkg:pypi/mod-wsgi","ranges":["<4.9.3"],"fixed":["4.9.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}