CVE-2026-55794High▾ TwilightCraft CMS: Potential authenticated Remote Code Execution via referrer redirect
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
0.3%
0.3% → 0.4%
Control panel users with the ability to edit entries can execute unsandboxed Twig code via the HTTP Referrer header.
The issue happens when a user is saving entries. Strings for a signed redirect URL are being compiled as a Twig template via renderObjectTemplate(), and while a sandboxed alternative already exists (renderSandboxedObjectTemplate()), it is not used in this case. This signed URL can be specified by users, as it is reflected in the “Referer” HTTP request header, which is under attacker control.
This has been fixed in Craft 5.10.0. Affected users should update to that version or higher to get the fix.
https://github.com/craftcms/cms/pull/18680
craftcms/cms >= 5.9.0, < 5.10.0Upgrade to a patched release:
craftcms/cms 5.10.0Connected by shared product, vendor, weakness, or advisory.
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GHSA-xxpx-f366-4xpqMediumCraft CMS:Authorization bypass: view-only Categories user can modify category structure via structures/move-element
GHSA-wg23-69c2-gjc8CriticalCraft CMS: Passkey login accepts replayed WebAuthn assertions
GHSA-p8x7-9vfw-p7vcHighCraft CMS: Arbitrary user password reset leading to administrator account takeover
GHSA-2rp4-x2j7-qmccMediumCraft CMS: Stored XSS in the control panel via unescaped draft name
GHSA-7hxc-f267-h5q7LowCraft CMS: Incorrect path validation could potentially lead to path traversal