Improper Authentication in wolfSSL - CVE-2026-11703
Published: July 1, 2026
Vulnerability identifier: #VU136645
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-11703
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wolfSSL
Affected software:
wolfSSL
wolfSSL
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authentication context binding.
The vulnerability exists due to improper authentication in stateful session resumption when resuming a cached session under a different SNI or ALPN than originally negotiated. A remote attacker can resume a cached session under a different SNI or ALPN to bypass authentication context binding.
This affects the session-ID resumption path and is relevant where client-authentication policy differs across virtual hosts.
How to mitigate CVE-2026-11703
Install security update from vendor's website.