An issue in the ConfirmNameConstraints() function (wolfcrypt/src/asn.c) of wolfSSL v5.9.1 and v5.9.2 allows attackers to cause a Denial of Service… (CVE-2026-95208)
Description
A vulnerability in the ConfirmNameConstraints() function of wolfSSL versions 5.9.1 and 5.9.2 can cause a Denial of Service (DoS). This occurs when attackers provide specially crafted Certificate Authority certificates, causing wolfSSL-based TLS clients to incorrectly reject valid certificates that lack Subject Alternative Names (SAN).
Affected software
pkg:github/wolfssl/wolfsslRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The ConfirmNameConstraints() function in wolfcrypt/src/asn.c of wolfSSL versions 5.9.1 and 5.9.2 contains a flaw that can be triggered by specially crafted Certificate Authority certificates. This flaw leads to valid certificates lacking SAN fields being mistakenly rejected, resulting in a Denial of Service condition for TLS clients relying on wolfSSL.
Potential Impact
Attackers can cause a Denial of Service by making wolfSSL-based TLS clients reject valid certificates without SAN, disrupting normal TLS connections and potentially causing service outages.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-vf9w-2hh8-xxhh
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-95208"]
- State
- PUBLISHED
Threat ID: 6ac80f172cdf04f656390547
Added to database: 10/08/2026, 21:45:59 UTC
Last enriched: 10/08/2026, 21:51:58 UTC
Last updated: 10/09/2026, 05:48:07 UTC
Views: 4
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