What is CVE-2026-29168?

CVE-2026-29168 is a high-severity vulnerability in Apache HTTP Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.3/10. Published 2026-05-05.

How severe is CVE-2026-29168?

High severity. CVSS v3 base score is 7.3 out of 10.

Resource exhaustion in Apache HTTP Server

CVE-2026-29168

Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's mod_md via OCSP response data. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.

Published 2026-05-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.011 (63.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.011 · change: +0.004

Affected products

Apache HTTP Server
Apache Software Foundation HTTP Server — versions 2.4.30

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

httpd.apache.org/security/vulnerabilities_24.html (vendor-advisory, Release Notes, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-29168?: CVE-2026-29168 is a high-severity vulnerability in Apache HTTP Server, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.3/10. Published 2026-05-05.
How severe is CVE-2026-29168?: High severity. CVSS v3 base score is 7.3 out of 10.