CVE-2026-56385
Last modified
CVE-2026-56385 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Craft CMS versions >= 5.0.0-RC1, <= 5.9.13 and >= 4.0.0-RC1, <= 4.17.7 contain an authorization bypass in the assets/preview-file endpoint. The action does not enforce per-asset view authorization before returning preview content, allowing an authenticated low-privileged user to supply a controlled assetId for an asset they are not permitted to view and still receive preview response data (previewHtml), including a private preview image route containing the target private assetId. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
Description
Craft CMS versions >= 5.0.0-RC1, <= 5.9.13 and >= 4.0.0-RC1, <= 4.17.7 contain an authorization bypass in the assets/preview-file endpoint. The action does not enforce per-asset view authorization before returning preview content, allowing an authenticated low-privileged user to supply a controlled assetId for an asset they are not permitted to view and still receive preview response data (previewHtml), including a private preview image route containing the target private assetId. Fixed in 5.9.14 and 4.17.8.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-56385?
How severe is CVE-2026-56385?
How do I fix CVE-2026-56385?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-56379ImageMagick before 7.1.2-15 and 6.9.13-40 contains a command…9.2
- CVE-2026-5638A vulnerability was detected in HerikLyma CPPWebFramework up…5.5
- CVE-2026-56381Craft CMS from version 5.0.0-RC1 contains a stored cross-sit…4.8
- CVE-2026-56382Craft CMS (composer package craftcms/cms) versions >= 5.5.0 …8.6
- CVE-2026-56383Craft CMS contains a stored cross-site scripting (XSS) vulne…4.8
- CVE-2026-56384Craft CMS contains a missing authorization vulnerability in …5.3
- CVE-2026-56389GNU Bison allows for an execution of an arbitrary program du…6.8
- CVE-2026-5639A flaw has been found in PHPGurukul Online Shopping Portal P…6.3
- CVE-2026-56390GNU Bison improperly handles grammar‑defined output paths. G…4.6
- CVE-2026-56391GNU coreutils uniq is vulnerable to an out‑of‑bounds read du…4.6
- CVE-2026-56392GNU coreutils unexpand is vulnerable to a heap-based buffer …1.8
- CVE-2026-56393Craft CMS 4.x (>= 4.0.0-RC1, < 4.17.0-beta.1) and 5.x (>= 5.…4.8
Are you affected by CVE-2026-56385?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST