Use After Free in Apache HTTP Server
CVE-2026-29167
Use After Free vulnerability in Apache HTTP Server with mod_ldap in per-directory configuration This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.007 · change: -0.003
Affected products
- Apache HTTP Server
- Apache Software Foundation HTTP Server — versions 2.4.0
Weakness classification (CWE)
References
- httpd.apache.org/security/vulnerabilities_24.html (vendor-advisory, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
Frequently asked questions
- What is CVE-2026-29167?
- CVE-2026-29167 is a critical-severity vulnerability in Apache HTTP Server, classified under Use After Free. CVSS score: 9.8/10. Published 2026-06-08.
- How severe is CVE-2026-29167?
- Critical severity. CVSS v3 base score is 9.8 out of 10.