DEBIAN-CVE-2026-119561
Dashboard / Vulnerabilities / DEBIAN-CVE-2026-119561
Summary:
Details: 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.
Affected packages
Package
Name: phpmyadmin
Purl: pkg:deb/debian/phpmyadmin?arch=source&distro=bookworm
Affected ranges
Type: ECOSYSTEM
Events:
Introduced- 0
Fixed -None
Affected versions
4:5.2.1+dfsg-1
4:5.2.1+dfsg-1+deb12u1
4:5.2.1+dfsg-2
4:5.2.1+dfsg-3
4:5.2.1+dfsg-4
4:5.2.2-dev+759fe912a-1
4:5.2.2-really+dfsg-1
4:5.2.2-really+dfsg-2
4:5.2.2-really5.2.2+20241130+dfsg-1
4:5.2.2-really5.2.2+20241228+dfsg-1
4:5.2.2-really5.2.2+20250114+dfsg-1
4:5.2.2-really5.2.2+20250121+dfsg-1
4:5.2.3+dfsg-1
4:5.2.4~dev~git20260809.e0909b211b+dfsg-1
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
