Medium severity4.9NVD Advisory· Published Jun 9, 2026· Updated Aug 7, 2026
CVE-2026-11793
CVE-2026-11793
Description
A stack buffer overflow flaw was found in 389 Directory Server. The checkPrefix() function in pw.c copies an attacker-controlled algorithm ID into a 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. An attacker with Directory Manager privileges can crash the LDAP server by storing a crafted credential with an oversized algorithm ID. FORTIFY_SOURCE mitigates this to denial of service only.
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Affected products
5- cpe:2.3:o:redhat:389_directory_server:-:*:*:*:*:*:*:*
- osv-coords2 versionspkg:rpm/opensuse/389-ds&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/389-ds&distro=openSUSE%20Tumbleweed
< 3.0.6~git382.7a51ea5f5-160000.1.1+ 1 more
- (no CPE)range: < 3.0.6~git382.7a51ea5f5-160000.1.1
- (no CPE)range: < 3.2.2+4b41542b2-1.1
Patches
Vulnerability mechanics
References
2- access.redhat.com/security/cve/CVE-2026-11793nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
News mentions
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