Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoder
Summary
| CVE | CVE-2026-103552 |
|---|---|
| State | PUBLISHED |
| Assigner | apache |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-02 10:17:06 UTC |
| Updated | 2026-10-02 10:17:06 UTC |
| 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. |
Risk And Classification
Problem Types: CWE-121 | CWE-121 CWE-121 Stack-based buffer overflow
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Apache Software Foundation | Apache Directory LDAP API | affected 1.2.0 1.2.9 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| lists.apache.org/thread.html/fn3bwknn57266hx66w9vv6b4k8rfwcx7 | [email protected] | lists.apache.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Claude Security (en)
CNA: The Apache Software Foundation (en)
There are currently no legacy QID mappings associated with this CVE.