CVE-2026-89135

Failed X509_verify_cert leaves unverified CA in shared CertManager

State: Published
Severity: 6.3 Medium
Published: Sep 27, 2026
Updated: Sep 29, 2026
Reserved: Sep 10, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	wolfSSL

Weaknesses

CWE-295 Improper Certificate Validation

Affected Products

Product	Versions
wolfSSLwolfSSL	5.8.4 through 5.9.2Affected

References

https://github.com/wolfSSL/wolfssl/pull/11009

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