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No exploitation reported

CVE-2026-119561

phpMyAdmin through 5.2.3 WebAuthn Two-Factor Authentication Bypass via CustomServer

No exploitation reported by the sources we read.

  • Published2026-10-30
  • WeaknessCWE-347

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-10-3012:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-119561?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-119561?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Phpmyadmin
BranchAffectedFixed in
5.2≤ 5.2.3no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-30

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • phpmyadminDebian:14all versions · no fixed version listed
  • phpmyadminDebian:13all versions · no fixed version listed
  • phpmyadminDebian:12all versions · no fixed version listed

Vendor advisories

  • CVE-2026-119561 Red Hat Product Security

    phpMyAdmin: phpMyAdmin: Two-factor authentication bypass via unverified WebAuthn signatures

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2026-10-30
  • OpenCVESSVC decisionnoneknown since 2026-10-30
  • CNACVSS 4.07.6read 2026-11-03
  • CNACVSS 3.16.8read 2026-11-03
  • NVDCVSS 3.18.1read 2026-11-03
  • CNAweakness (CWE)CWE-347read 2026-11-03
  • NVDweakness (CWE)CWE-347read 2026-11-03
  • FIRST EPSSEPSS score0.2 %2026-11-03
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-10-30
Last Modified
2026-11-03
NVD status
Analyzed
GitHub Advisory
GHSA-hmm7-jqq6-vwhr

Frequently asked questions

What is CVE-2026-119561?

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.

Is CVE-2026-119561 actively exploited?

Active exploitation of CVE-2026-119561 has not been confirmed. Its EPSS score was 0.2% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-119561?

CVE-2026-119561 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

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