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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…
- 7.5HighCVSS base score
- 0.94%Exploitation in 30 daysEPSS · top 39% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
- 57 days later
· 57 days later
Published
- 24 months later
· 24 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.94% · top 39% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
mod_wsgi
- affected mod_wsgi versions prior to 4.9.3
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- PyPImod-wsgiGHSA-7527-8855-9cf8 (opens in a new tab)
References
4
- https://modwsgi.readthedocs.io/en/latest/release-notes/version-4.9.3.html (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/GrahamDumpleton/mod_wsgi/blob/4.9.2/src/server/mod_wsgi.c#L13940-L13941 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/GrahamDumpleton/mod_wsgi/blob/4.9.2/src/server/mod_wsgi.c#L14046-L14082 (opens in a new tab)x_refsource_MISCx_transferred
- [debian-lts-announce] 20220915 [SECURITY] [DLA 3111-1] mod-wsgi security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-0159 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-7527-8855-9cf8 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-2255)Record last updated .