TI-2026-83025 Aliases CVE-2026-119561 GHSA-hmm7-jqq6-vwhr

WebAuthn two-factor authentication bypass in phpMyAdmin

LOW 35CWE-347Published 2026-10-30 · Updated 2026-10-30

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Attack requirements: Present
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-347.

Summary

phpMyAdmin through 5.2.3 contains an authentication bypass in CustomServer::parseAndValidateAssertionResponse(), which never verifies WebAuthn assertion signatures against stored public keys (CWE-347). An attacker who holds a victim's MySQL credentials can submit a crafted authentication response to skip the second factor and gain database privileges. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00204 10th percentileScored 2026-11-07

Public exploit Yes 2 exploit referencesTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
phpMyAdmin	phpMyAdmin	up to 5.2.3	—	No fix listed	CNA

phpMyAdmin VendorphpMyAdmin Affected up to 5.2.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:phpmyadmin:phpmyadmin::::::::	up to 5.2.3	Vulnerable	phpMyAdmin

cpe:2.3:a:phpmyadmin:phpmyadmin:*:*:*:*:*:*:*:* Versions up to 5.2.3 Vulnerable ·phpMyAdmin

Remediation

The sources list no fixed version for phpMyAdmin.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-30 Threatist record created from CVE-2026-119561
2026-10-30 Alias added: GHSA-hmm7-jqq6-vwhr
2026-10-30 CISA SSVC decision points changed
2026-10-30 Priority changed: MEDIUM → LOW
2026-10-30 Affected versions changed · Red Hat
2026-10-30 CVSS score added · Red Hat
2026-11-03 CVSS score added · NVD

References

Exploit 2

Other 2

TI-2009-01092 Static code injection vulnerability in setup.php in phpMyAdmin 2.11.x before 2.11.9.5 and… KEVCVSS 3.1CRITICAL 9.8
TI-2018-09056 An issue was discovered in phpMyAdmin 4.8.x before 4.8.2, in which an attacker can… CVSS 3.1HIGH 8.8
TI-2020-14341 SQL Injection vulnerability in function getTableCreationQuery in CreateAddField.php in… CVSS 3.1CRITICAL 9.8
TI-2016-04978 phpMyAdmin 4.0.x before 4.0.10.16, 4.4.x before 4.4.15.7, and 4.6.x before 4.6.3 does not… CVSS 3.0CRITICAL 9.8
TI-2020-16362 An issue was discovered in SearchController in phpMyAdmin before 4.9.6 and 5.x before… CVSS 3.1CRITICAL 9.8
TI-2012-04350 phpMyAdmin 3.5.2.2, as distributed by the cdnetworks-kr-1 mirror during an unspecified… CVSS 2.0HIGH 7.5

See all 276 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences