CVE-2026-29168

EUVD-2026-27321
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.3 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 19%
Affected Products (NVD)
VendorProductVersion
apachehttp_server
2.4.30 ≤
𝑥
< 2.4.67
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
apache2
bionic
needs-triage
focal
needs-triage
jammy
Fixed 2.4.52-1ubuntu4.20
released
noble
Fixed 2.4.58-1ubuntu8.12
released
questing
Fixed 2.4.64-1ubuntu3.4
released
resolute
Fixed 2.4.66-2ubuntu2.1
released
trusty
needs-triage
xenial
needs-triage
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://httpd.apache.org/security/vulnerabilities_24.html
http://www.openwall.com/lists/oss-security/2026/05/05/6