Apache Directory LDAP API vulnerabilities

3 CVEs affecting Apache Directory LDAP API, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-35563, published 2026-06-01.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2018-1337, published 2018-07-10. Critical severity, CVSS 9.8. EPSS: 5.2% chance of exploitation in the next 30 days. In Apache Directory LDAP API before 1.0.2, a bug in the way the SSL Filter was setup made it possible for another thread to use the connection before the TLS layer has been established, if the…
CVE-2015-3250, published 2017-09-07. High severity, CVSS 7.5. EPSS: 5.1% chance of exploitation in the next 30 days. Apache Directory LDAP API before 1.0.0-M31 allows attackers to conduct timing attacks via unspecified vectors.
CVE-2026-35563, published 2026-06-01. High severity, CVSS 8.5. EPSS: 0.3% chance of exploitation in the next 30 days. It was identified that the LDAP client implementation in version 2.1.7 does not verify if the server certificate matches the intended LDAP hostname. While the underlying code validates the…