Quick answers
- Is CVE-2026-103552 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-103552 being exploited in the wild.
- How severe is CVE-2026-103552?
- High severity, with a CVSS score of 7.3, published 2 October 2026.
- Which products and versions are affected?
- Apache Directory Ldap Api 1.2.0 to 1.2.8.
- Is there a fix for CVE-2026-103552?
- Yes: fixed in 1.2.9. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-103552 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-103552?
- Check whether you run Apache Directory Ldap Api at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 1.2.9
Technical details
A stack overflow vulnerability exists in the search filter decoding logic of Apache Directory LDAP API versions before 1.2.9. An unauthenticated client can exploit this by sending a deeply nested search filter before completing the bind operation, causing the decoder to exhaust the stack and crash the service or potentially execute arbitrary code.
Affected products
- Apache Directory LDAP API 1.2.0 to 1.2.8
Timeline
- 2026-10-02: disclosed