Description
Stack Overflow vulnerability in Apache Directory LDAP API.



Before binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder.



This issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9.



Users are recommended to upgrade to version 1.2.9, which fixes the issue.
Published: 2026-10-02
Score: 7.3 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

No vendor fix or workaround currently provided.

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History

Sat, 03 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770
References
Metrics threat_severity

None

threat_severity

Important


Fri, 02 Oct 2026 22:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 02 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}


Fri, 02 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache directory Ldap Api
Vendors & Products Apache
Apache directory Ldap Api

Fri, 02 Oct 2026 10:00:00 +0000

Type Values Removed Values Added
Description Stack Overflow vulnerability in Apache Directory LDAP API. Before binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder. This issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9. Users are recommended to upgrade to version 1.2.9, which fixes the issue.
Title Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoder
Weaknesses CWE-121
References

Subscriptions

Apache Directory Ldap Api
cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-10-02T21:07:19.881Z

Reserved: 2026-09-30T20:36:55.045Z

Link: CVE-2026-103552

cve-icon Vulnrichment

Updated: 2026-10-02T21:07:19.881Z

cve-icon NVD

Status : Deferred

Published: 2026-10-02T10:17:06.303

Modified: 2026-10-02T22:16:53.420

Link: CVE-2026-103552

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-02T09:48:05Z

Links: CVE-2026-103552 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-03T02:00:22Z

Weaknesses
  • CWE-121

    Stack-based Buffer Overflow

  • CWE-770

    Allocation of Resources Without Limits or Throttling