CVE-2026-35563highCWE-297

CVE-2026-35563: fallo de gravedad alta en Apache Directory LDAP API

Apache Directory LDAP API: LDAP client implementation does not verify if the server certificate matches the intended LDAP hostname

Publicada el

Seguir esta CVE+ Monitorear Apache Directory LDAP API+ Monitorear apache-directory-api

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 8.8epss 0.2%
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 certificate chain against a trusted authority, the absence of endpoint identification allows a valid certificate issued for an entirely unrelated host to be improperly accepted. This oversight leaves the connection highly vulnerable to server impersonation and complete connection compromise. The root cause of this vulnerability lies in the incomplete TLS server identity verification within the LDAP client implementation. The attacker requires MITM capability on the network to exploit this vulnerability. This attacker must be able to present a certificate trusted by the client's configured trust store. The hostname verification has been enforced in the new version of the LDAP API
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:L/SA:L
Productos afectados
Apache Software Foundation · Apache Directory LDAP API
CVEs relacionadas — Apache Directory LDAP API

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-103877CRITICALApache Directory LDAP API: Unsafe loading of Java code from LDAP schema elementsEPSS 0.5%CVE-2026-103885HIGHApache Directory LDAP API: Denial of service via crafted telephone number valuesEPSS 0.4%CVE-2026-103880HIGHApache Directory LDAP API: Denial of service via excessive bcrypt cost factor in stored passwordsEPSS 0.4%CVE-2026-102731HIGHApache Directory LDAP API: Denial of service via excessive memory allocation in BER decodeEPSS 0.4%CVE-2026-103552HIGHApache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoderEPSS 0.3%CVE-2026-103878HIGHApache Directory LDAP API: Injection of plaintext responses during StartTLSEPSS 0.2%