{"id":"CVE-2026-103552","title":"Stack Overflow vulnerability in Apache Directory LDAP API.\n\n\n\nBefore binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder.\n\n\n\nThis issue affects Apache Directory LDAP API: from 1.2.0 b…","summary":"Stack Overflow vulnerability in Apache Directory LDAP API.\n\n\n\nBefore binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder.\n\n\n\nThis issue affects Apache Directory LDAP API: from 1.2.0 b…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","cwe":["CWE-121","CWE-770"],"vendor":"Apache Software Foundation","product":"org.apache.directory.api:api-ldap-codec-core","affected":["org.apache.directory.api:api-ldap-codec-core >= 1.2.0 < 1.2.9"],"published":"2026-10-02","updated":"2026-10-02","sourceUpdated":"2026-10-02T22:16:53.420","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103552","references":[{"url":"https://lists.apache.org/thread.html/fn3bwknn57266hx66w9vv6b4k8rfwcx7","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/10/02/4","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-103552.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-103552"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2544996"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-103552"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103552"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-02T18:29:24.190444Z"},"epss":0.00327,"epssPercentile":0.25628,"ingestedAt":"2026-10-02T10:15:55.896Z","scores":{"nvd":7.3,"vendor":7.5},"slug":"CVE-2026-103552","body":"## Overview\n\nStack Overflow vulnerability in Apache Directory LDAP API.\n\n\n\nBefore binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder.\n\n\n\nThis issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9.\n\n\n\nUsers are recommended to upgrade to version 1.2.9, which fixes the issue.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Fuse 7 · no fix planned: Red Hat Fuse 7 · updated 2026-10-02 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-103552.json)","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":215122,"id":"CVE-2026-103552","ts":1790980473131,"field":"cvss","old":null,"new":"7.3"},{"seq":215121,"id":"CVE-2026-103552","ts":1790980473131,"field":"severity","old":"none","new":"high"}]}