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
OpenVPN 2.7_alpha1 through 2.7.5 using mbedTLS allows remote authenticated users to be misidentified by 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. OpenVPN, when configured with mbedTLS, may incorrectly identify users by disregarding the X.509 identity field, potentially leading to unauthorized access under specific, complex conditions.
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.
- 2.7.5
Official advisory · high-confidence parse· fetched 20 days 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 · high-confidence parse· fetched 20 days 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 · high-confidence parse· fetched 20 days ago·verify at source
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