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`.
https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-458c-7pwg-3j7j
https://github.com/zmartzone/mod_auth_openidc/commit/55ea0a085290cd2c8cdfdd960a230cbc38ba8b56
https://github.com/zmartzone/mod_auth_openidc/releases/tag/v2.4.9
https://github.com/zmartzone/mod_auth_openidc/commit/00c315cb0c8ab77c67be4a2ac08a71a83ac58751
Source: MITRE
Published: 2021-07-26
Updated: 2022-05-10
Type: CWE-79
Base Score: 4.3
Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 6.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Impact Score: 2.7
Exploitability Score: 2.8
Severity: MEDIUM