Low [CVE-2026-63650] User misidentification via ignored X.509 identity field
This low-severity Red Hat Linux advisory covers CVE-2026-63650.
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Summary
A flaw was found in OpenVPN when using mbedTLS. A remote authenticated user could be misidentified due to the software ignoring the configured X.509 username identity lookup field.
This could lead to incorrect user authentication and potential security bypasses. This flaw is rated as Low impact because it requires a remote authenticated user and high attack complexity to exploit.
Red Hat severity: Low — CVSS 3.1 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N). Weakness: CWE-303.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
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