CVE-2026-15243

Apereo CAS Client accepts any CA-trusted certificate for any hostname, provided the URL the client is calling matches the configured allowlist or regex. An attacker with a MITM position DNS poisoning, rogue Wi-Fi, malicious proxy, etc. can provide any CA-signed certificate for a hostname that...

EUVD-2026-48560

Apereo CAS Client accepts any CA-trusted certificate for any hostname, provided the URL the client is calling matches the configured allowlist or regex. An attacker with a MITM position DNS poisoning, rogue Wi-Fi, malicious proxy, etc. can provide any CA-signed certificate for a hostname that...

CVE-2026-15243

The CVE-2026-15243 issue affects the Apereo CAS Client where the client accepts any CA-trusted certificate for a hostname that matches the configured allowlist or regex. The underlying risk is a MITM attacker could present a any CA-signed certificate for a permitted hostname, enabling interceptio...

CVE-2026-15243 Improper Validation of Certificate in CAS Client

Apereo CAS Client accepts any CA-trusted certificate for any hostname, provided the URL the client is calling matches the configured allowlist or regex. An attacker with a MITM position DNS poisoning, rogue Wi-Fi, malicious proxy, etc. can provide any CA-signed certificate for a hostname that...

PT-2026-64277

Name of the Vulnerable Software and Affected Versions Apereo CAS Client version 4.1.0 Jasig CAS Client version 3.6.4 Description The software accepts any CA-trusted certificate for any hostname as long as the URL being called matches the configured allowlist or regex. A Man-in-the-Middle MITM...

CVE-2026-15243: Improper Validation of Certificate with Host Mismatch

Apereo CAS Client accepts any CA-trusted certificate for any hostname, provided the URL the client is calling matches the configured allowlist or regex. An attacker with a MITM position DNS poisoning, rogue Wi-Fi, malicious proxy, etc. can provide any CA-signed certificate for a hostname that...