CVE-2022-31813
mod_proxy X-Forwarded-For dropped by hop-by-hop mechanism
CRITICAL 9.8EPSS 3.5%
Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. This may be used to bypass IP based authentication on the origin server/application.
- Affected
- Apache Software Foundation · Apache HTTP Server
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0 NVD
- 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 3.54% chance of exploitation in the next 30 days, 89th percentile
- Published
- 2022-06-08
- Updated
- 2024-08-03
Proof-of-concept exploits (2)
- dodiorne/cve-2022-318131★ · 2025-05-21
- yiliufeng168/CVE-2022-318130★ · 2026-03-02
Security advisories
- https://httpd.apache.org/security/vulnerabilities_24.html
- http://www.openwall.com/lists/oss-security/2022/06/08/8
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/…
- https://security.gentoo.org/glsa/202208-20
- https://security.netapp.com/advisory/ntap-20220624-0005