CVE-2026-89135: wolfSSL

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A failed X509_verify_cert call permanently plants an unverified attacker CA in the shared CertManager, bypassing certificate validation in every type-blind sibling consumer (native TLS, OCSP, CRL, direct CM verify). This affects version 5.8.4 through 5.9.2 of wolfSSL with the macros (OPENSSL_EXTRA && !NO_CERTS && !WOLFCRYPT_ONLY) defined or built with --enable-opensslextra and the application is specifically making calls to the X509_verify_cert function.

Affected products

• wolfSSL wolfSSL: from 5.8.4, up to and including 5.9.2

Published 2026-09-27. Last modified 2026-10-02.