Apache Software Foundation HTTP Server (httpd) Vulnerabilities & Security Advisories
16 advisories tracked · ASF Security (security@apache.org CNA) via NVD · 1 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Apache Software Foundation advisory that VulniPulse classified as HTTP Server (httpd), with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 5 high, 5 medium.
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ASF Security (security@apache.org CNA) via NVD
The Apache Software Foundation is its own CVE Numbering Authority: every Apache project CVE (HTTP Server, Tomcat, ActiveMQ, Struts, Kafka, Airflow, OFBiz, Solr and 300+ more) is published by security@apache.org and announced on the projects' mailing lists. VulniPulse ingests the CNA feed from NVD filtered to security@apache.org — official, machine-readable, with affected/fixed versions embedded in each description. Per-project security pages (httpd.apache.org/security, tomcat.apache.org/security-XX.html) carry the vendor detail.
Latest Apache HTTP Server (httpd) advisories
Medium [CVE-2026-33523] HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised backend servers
HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised backend servers. This issue affects Apache HTTP Server: from through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.
Medium [CVE-2026-33007] NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier
A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration. Users are recommended to upgrade to version 2.4.67, which fixes this issue.
Medium [CVE-2026-33006] timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker
A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker. Users are recommended to upgrade to version 2.4.67, which fixes this issue.
Medium [CVE-2026-34032] Apache HTTP Server: Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server.
Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.
Medium [CVE-2026-33857] Apache HTTP Server: Out-of-bounds Read vulnerability in mod_proxy_ajp of Apache HTTP Server.
Out-of-bounds Read vulnerability in mod_proxy_ajp of Apache HTTP Server. Users are recommended to upgrade to version 2.4.67, which fixes the issue.