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CVE-2026-29167 is a use-after-free vulnerability in Apache HTTP Server affecting mod_ldap when used in per-directory configuration. The flaw affects Apache HTTP Server versions 2.4.0 through 2.4.67 and arises from a dangling-pointer condition in mod_ldap processing for per-directory configuration contexts, including scenarios involving LDAP-related directives in .htaccess when the relevant override behavior is permitted. A successful trigger can cause memory corruption and unstable process behavior in the httpd worker handling the request. The issue was fixed in Apache HTTP Server 2.4.68.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
27 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability affecting IBM HTTP Server configurations where mod_authnz_ldap is loaded and LDAP configuration directives are used in .htaccess files.
A use-after-free vulnerability in Apache HTTP Server mod_ldap per-directory configurations affecting versions 2.4.0 through 2.4.67.
A vulnerability addressed in the Apache HTTP Server 2.4.68 security update.
Apache HTTP Server vulnerability affecting mod_ldap, fixed in version 2.4.68.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.