CVE-2026-33006

A flaw was found in the mod_auth_digest module of httpd. A remote unauthenticated attacker can bypass digest authentication by measuring timing discrepancies of requests. This issue leads to unauthorized access to resources protected by digest authentication.

To exploit this vulnerability, an attacker needs to send a high volume of specific requests to the server. These payloads are used to trigger the vulnerable and non-constant-time code path to perform statistical analysis on the resulting timing variations, increasing the complexity of exploitation. The primary security impact of this issue is the unauthorized access to resources protected by digest authentication. Due to these reasons, this flaw has been rated with a moderate severity.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.