CVE-2026-89135CWE-295

CVE-2026-89135

Medium · published September 27, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
4.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
6.3 · 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
EPSS
0.00155 · 4.3th percentile
Weakness
CWE-295 · Improper Certificate Validation
Published
2026-09-27T14:16Z
Affected products (1)
ProductVersionsFixed in
wolfssl/wolfssl≥ 5.8.4, ≤ 5.9.2—
References (1)
https://github.com/wolfSSL/wolfssl/pull/11009 · [email protected]
EPSS history
Timeline
  • 28 SEP 03:29Z
    EPSS moved — → 0%
    epss
  • 27 SEP 09:14Z
    Failed X509_verify_cert leaves unverified CA in shared CertManager
    cvelistv5