Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey (CVE-2026-72780) | HOL Guard CVE

Medium · CVSS 6.5CVE-2026-72780

Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey

Answer in brief

CVE-2026-72780 records a Medium severity (CVSS 6.5) vulnerability in Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey. The current sources do not mark it as known exploited. The current feed maps craftcms/cms (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 11, 2026Updated Aug 28, 2026Source checked Sep 25, 2026First seen by HOL Aug 11, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps craftcms/cms (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
craftcms/cmsgeneric	>=5.0.0-RC1 <5.10.5	5.10.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for craftcms/cms.
Review the reported fix. Update craftcms/cms to 5.10.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 11, 2026

Sources and claim methodology

Upstream source description

Craft CMS before 5.10.5 fails to persist updated credential counters after WebAuthn assertion validation in the passkey login endpoint. Attackers can replay captured login request bodies containing requestOptions and response to create additional authenticated sessions for victim accounts.

Quoted source text, attributed separately from HOL analysis.