MEDIUM 5.9 NVD
CVE-2026-18663
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function frees the parsed controls array on the Session Tracking critical-control rejection
A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function frees the parsed controls array on the Session Tracking critical-control rejection path without clearing the SLAPI_REQCONTROLS pblock slot. Operation teardown then frees the same pointer again, causing a double-free. An unauthenticated remote attacker can trigger this with a single BIND request carrying a critical Session Tracking control, resulting in heap corruption and potential denial of service.
References
- https://access.redhat.com/security/cve/CVE-2026-18663
- https://bugzilla.redhat.com/show_bug.cgi?id=2510631
This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-08-12 via NVD.
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