phpMyAdmin through 5.2.3 contains an authentication bypass vulnerability in CustomServer::parseAndValidateAssertionResponse() that never verifies WebAuthn assertion signatures against stored public keys. Attackers holding a victim's MySQL credentials can POST a crafted webauthn_request_response with matching challenge, origin, and rpIdHash to bypass the second factor and gain database privileges.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 30 Oct 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | phpMyAdmin through 5.2.3 contains an authentication bypass vulnerability in CustomServer::parseAndValidateAssertionResponse() that never verifies WebAuthn assertion signatures against stored public keys. Attackers holding a victim's MySQL credentials can POST a crafted webauthn_request_response with matching challenge, origin, and rpIdHash to bypass the second factor and gain database privileges. | |
| Title | phpMyAdmin through 5.2.3 WebAuthn Two-Factor Authentication Bypass via CustomServer | |
| First Time appeared |
Phpmyadmin
Phpmyadmin phpmyadmin |
|
| Weaknesses | CWE-347 | |
| CPEs | cpe:2.3:a:phpmyadmin:phpmyadmin:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Phpmyadmin
Phpmyadmin phpmyadmin |
|
| References |
|
|
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-30T11:31:09.654Z
Reserved: 2026-10-30T10:53:30.067Z
Link: CVE-2026-119561
No data.
Status : Received
Published: 2026-10-30T12:16:43.513
Modified: 2026-10-30T12:16:43.513
Link: CVE-2026-119561
No data.
OpenCVE Enrichment
Updated: 2026-10-30T14:15:07Z
Weaknesses