CVE-2026-103885

Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API. A LDAP server using the LDAP API (like Apache DS) may consume 100% of a CPU core indefinitely when processing some badly crafted Telephone Numbers. This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. Users are recommended to upgrade to version 2.1.9, which fixes the issue.

Score

CVSS 3.1 7.5 High

Status

Deferred - security@apache.org

Published

2026-10-02

Last modified

2026-10-08

Weaknesses

CWE-400

Affected products

• Apache Directory Ldap Api (Apache Software Foundation)

References

• https://lists.apache.org/thread.html/wjt9p1l123v6b3zd5dg41f8lfrgy5vg9
• http://www.openwall.com/lists/oss-security/2026/10/02/8