CVE-2026-10592 Wildcard DNS SAN bypasses CA name-constraint checks
Attackers can bypass CA name constraints using wildcard DNS SANs, allowing acceptance of unauthorized certificates in wolfSSL.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-10592?
CVE-2026-10592 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Certificates with wildcard DNS SANs (e.g. *.example.com) bypassed CA name-constraint checks. A certificate with a wildcard DNS SAN that should be rejected by the issuing CA's permitted/excluded DNS name constraints could be accepted.
Weakness: CWE-295
Which versions are affected by CVE-2026-10592?
It affects 1 product.
Products include Wolfssl Wolfssl.
How do I fix CVE-2026-10592?
Apply the vendor's patch.
Is CVE-2026-10592 being exploited?
There is no known exploitation of CVE-2026-10592 in the wild and no public exploit code.
Other vulnerabilities in Wolfssl Wolfssl
Sources
Also known as DEBIAN-CVE-2026-10592, GHSA-m8r2-qgr6-4gqm, JLSEC-2026-696, UBUNTU-CVE-2026-10592.