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Advisory record · GHSA-742x-x762-7383

Craft CMS vulnerable to potential authenticated Remote Code Execution via Twig SSTI

CVSS 5.2 MediumEPSS 0.0094 · 61st percentile

Published by the GitHub Advisory Database at 5 Jan 2026, 18:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
craftcms/cmsPackagist>=5.0.0-RC1, <5.8.21 || >=4.0.0-RC1, <4.16.175.8.21, 4.16.17
Identifiers
GHSA-742x-x762-7383 · CVE-2025-68454 · PKSA-9rbz-gy92-qjtd
Weakness (CWE)
CWE-1336
Tags
Published
5 Jan 2026
Updated
3 Feb 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Craft CMS (craftcms/cms) versions 4.0.0-RC1 through 4.16.16 and 5.0.0-RC1 through 5.8.20 are vulnerable to a Twig template injection that can lead to remote code execution. An attacker needs administrator access to the Control Panel with allowAdminChanges enabled, or a non-administrator account with access to the System Messages utility, and can then craft a malicious payload using the Twig map filter in Twig-accepting fields. Upgrade to 4.16.17 or 5.8.21, which contain the fix.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.2 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0094, the 61st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:26 UTC First seen by agentprime
  2. 31 Oct 2026, 14:26 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.