Vulnerability · Published Aug 11, 2026 · Assigned by VulnCheck
CVE-2026-72780Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey
Medium 6.5
In plain English
A medium-severity security flaw in cms from craftcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 67.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | craftcms/cms | 5.10.5 | GHSA-wg23-69c2-gjc8 |
Affected products (as reported)
Weakness: CWE-294 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- GitHub Security Advisory (GHSA-wg23-69c2-gjc8) vendor-advisory
- VulnCheck Advisory: Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey third-party-advisory