Vulnerability Details CVE-2026-89135
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 4.1%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-89135
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cpe:2.3:a:wolfssl:wolfssl:5.8.4
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cpe:2.3:a:wolfssl:wolfssl:5.9.0
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cpe:2.3:a:wolfssl:wolfssl:5.9.1
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cpe:2.3:a:wolfssl:wolfssl:5.9.2