CVE-2023-28625: Openidc Mod Auth Openidc

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

mod_auth_openidc is an authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. In versions 2.0.0 through 2.4.13.1, when `OIDCStripCookies` is set and a crafted cookie supplied, a NULL pointer dereference would occur, resulting in a segmentation fault. This could be used in a Denial-of-Service attack and thus presents an availability risk. Version 2.4.13.2 contains a patch for this issue. As a workaround, avoid using `OIDCStripCookies`.

Affected products

• Openidc Mod Auth Openidc: from 2.0.0, before 2.4.13.2 (fixed in 2.4.13.2)

Published 2023-04-03. Last modified 2026-06-17.