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httpd: mod_md: unrestricted OCSP response leads to resource exhaustion

🗓️ 20 Aug 2026 18:37:13Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

mod_md in httpd lacks OCSP response size limits, causing memory exhaustion and DoS.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.2aarch64mod_md1:2.4.19-1.el9_2.2mod_md-1:2.4.19-1.el9_2.2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lemod_md1:2.4.19-1.el9_2.2mod_md-1:2.4.19-1.el9_2.2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xmod_md1:2.4.19-1.el9_2.2mod_md-1:2.4.19-1.el9_2.2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64mod_md1:2.4.19-1.el9_2.2mod_md-1:2.4.19-1.el9_2.2.x86_64.rpm

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21 Aug 2026 02:22Current
7.4High risk
Vulners AI Score7.4
CVSS 3.17.3
EPSS0.00628
SSVC
4