Missing Authorization in SilverStripe Framework - CVE-2026-91113
Published: November 6, 2026
Vulnerability identifier: #VU159836
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-91113
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an authenticated attacker with permission to edit a record to change its type without authorization for the target class.
The vulnerability exists due to missing target-class permission checks when a user-controlled ClassName value is submitted through a GridField detail form in SilverStripe Framework. An authenticated attacker can submit an unrelated class name while editing an accessible record and cause an unauthorized record-type change.
Affected software
SilverStripe Framework
How to mitigate CVE-2026-91113
Install security update from vendor's website.
SilverStripe Framework - update to 6.2.13