CVE-2026-72780

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

MEDIUM
6.5
CVSS Score
Published: August 11, 2026 at 12:17 PM UTC
Updated: October 24, 2026 at 03:10 PM UTC
1 product affected across 1 vendorCraftcms

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.0.0-RC1 ≤ v < 5.10.55.0.0-RC1
Vendor states this is fixed in 5.10.5 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-294

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