What’s Vulnerable › Vulnerabilities
CVE-2026-89135: Failed X509_verify_cert leaves unverified CA in shared CertManager
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-27 · updated 2026-10-02
- Weakness: CWE-295
Description
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: from 5.8.4 through 5.9.2
References
Get alerted when CVE-2026-89135 or the next vulnerability affects your stack