---
id: CVE-2026-89135
title: >-
  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)
summary: >-
  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 …
severity: medium
cvss: 6.3
cvssVector: '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'
cwe:
  - CWE-295
vendor: wolfSSL
product: wolfSSL
affected:
  - wolfSSL >= 5.8.4 <= 5.9.2
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T10:16:59.157'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89135'
references:
  - url: 'https://github.com/wolfSSL/wolfssl/pull/11009'
    label: facts@wolfssl.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-27T09:45:46.032Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.