CVE-2026-100671 Grav - Broken Access Control

Grav 2.0.19 through 2.0.24 and 2.0.0 through 2.0.18 with content Twig enabled contain a broken access control vulnerability caused by server-side rendering of user-authored content with get_cookie() in Twig sandbox, letting page-write users capture admin session cookies and enable unauthenticated access, exploit requires page-write permission.

CVSS base score 8.0 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Required
EPSS
0.29% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Published
26 September 2026
Updated
15 October 2026
Weakness
CWE-200

Vendor fix

Upgrade to version 2.0.25 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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