CVE-2026-89134 Affecting wolfssl package, versions *


Severity

Recommended
0.0
critical
0
10

Snyk's Security Team recommends NVD's CVSS assessment. Learn more

Threat Intelligence

EPSS
0.16% (5th percentile)

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  • Snyk IDSNYK-ECHOLATEST-WOLFSSL-20187865
  • published28 Sept 2026
  • disclosed27 Sept 2026

Introduced: 27 Sep 2026

NewCVE-2026-89134  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest wolfssl.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A certificate with no dNSName SAN but another SAN type present (e.g. registeredID or iPAddress) bypassed the Subject CN dNSName name-constraint check. The CN-as-DNS fallback was gated on cert->subjectCN != NULL && cert->altNames == NULL && !cert->isCA instead of "no dNSName SAN", so an out-of-scope CN was accepted. This incomplete fix from CVE-2026-6731, leading to the name-constraint check issue, was introduced in wolfSSL version 5.9.2.

CVSS Base Scores

version 3.1