AIKIDO-2026-10083
craftcms/cms is vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition
55
Medium Risk
This Affects:
craftcms/cmsTL;DR
Affected versions of this package are vulnerable to a time-of-check to time-of-use (TOCTOU) issue in token handling that could allow a race condition during token validation and usage, leading to unexpected behavior in token-based operations. The patched version ensures exclusive access when checking and using tokens to prevent this race condition.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
craftcms/cms is vulnerable to Time-of-check Time-of-use (TOCTOU) Race Condition in versions 2.1.0 - 4.16.18 and 5.0.0 - 5.8.22.
How to fix this
Upgrade the craftcms/cms library to the patch version.
Links
GitHub Release
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