Quick answers
- Is CVE-2026-73636 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-73636 being exploited in the wild.
- How severe is CVE-2026-73636?
- High severity, with a CVSS score of 8.1, published 1 October 2026.
- Which products and versions are affected?
- Apache Software Foundation HTTP Server 2.4.0 through 2.4.68.
- Is there a fix for CVE-2026-73636?
- Yes: fixed in 2.4.69. Until then: <UNKNOWN> Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-73636 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-73636?
- Check whether you run Apache Software Foundation HTTP Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 2.4.69
<UNKNOWN>
Technical details
A capture-replay authentication bypass in mod_auth_digest allows a man-in-the-middle attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry. The vulnerability requires the AuthDigestNonceLifetime directive to be set to 0 and affects all Apache HTTP Server 2.4.x versions through 2.4.68. The attack vector is network-based and does not require additional authentication or user interaction.
Affected products
- Apache Software Foundation HTTP Server 2.4.0 through 2.4.68
Timeline
- 2026-06-08: disclosed: Report received
- 2026-10-01: patched: Fixed in 2.4.x by r1937721
- 2026-10-01: advisory: 2.4.69 released