XSS in Apache Http Server
CVE-2021-32792
mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. In mod_auth_openidc before version 2.4.9, there is an XSS vulnerability in when using `OIDCPreservePost On`.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.015 (72.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N.
Affected products
- Apache Http_server
- Openidc Mod_auth_openidc
- Zmartzone Mod_auth_openidc — versions < 2.4.9
- Fedoraproject Fedora — versions 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (Third Party Advisory, Release Notes)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (vendor-advisory)
- security-advisories@github.com (vendor-advisory)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (mailing-list)
Frequently asked questions
- What is CVE-2021-32792?
- CVE-2021-32792 is a low-severity vulnerability in Apache Http Server, classified under Cross-site Scripting. CVSS score: 3.1/10. Published 2021-07-26.
- How severe is CVE-2021-32792?
- Low severity. CVSS v3 base score is 3.1 out of 10.
- Is CVE-2021-32792 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.