Information disclosure in Craft CMS - CVE-2026-33158
Published: March 24, 2026
Vulnerability identifier: #VU124284
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-33158
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the endpoint returns image bytes (or a preview redirect) without enforcing a per-asset view authorization check. A remote attacker can read private asset contents when editing an asset.
Affected software
Craft CMS
How to mitigate CVE-2026-33158
Install updates from vendor's website.
Craft CMS - addressed in versions 4.17.8, 5.9.14