CVE-2026-33160
published 2026-03-24CVE-2026-33160: Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, an…
PriorityP432medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.36%
27.4th percentile
Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, an unauthenticated user can call assets/generate-transform with a private assetId, receive a valid transform URL, and fetch transformed image bytes. The endpoint is anonymous and does not enforce per-asset authorization before returning the transform URL. This issue has been patched in versions 4.17.8 and 5.9.14.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| craftcms | cms | — | — |
| craftcms | cms | — | — |
| craftcms | cms | >= 4.0.0-RC1 < 4.17.8 | 4.17.8 |
| craftcms | cms | >= 5.0.0-RC1 < 5.9.14 | 5.9.14 |
| craftcms | craft_cms | < 4.17.8 | 4.17.8 |
| craftcms | craft_cms | < 5.9.14 | 5.9.14 |
| craftcms | craft_cms | — | — |
| craftcms | craft_cms | — | — |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv4.02.7LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/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
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
Craft CMS may expose private assets through anonymous "generate transform" calls via transform URL
ghsa·2026-03-24
CVE-2026-33160 [LOW] CWE-639 Craft CMS may expose private assets through anonymous "generate transform" calls via transform URL
Craft CMS may expose private assets through anonymous "generate transform" calls via transform URL
### Summary
An unauthenticated user can call `assets/generate-transform` with a private `assetId`, receive a valid transform URL, and fetch transformed image bytes.
The endpoint is anonymous and does not enforce per-asset authorization before returning the transform URL.
### Details
Root cause:
- Anonymous endpoint accepts user-controlled asset reference.
- It creates and returns a transform URL for that asset without checking access rights.
- If the transform output is reachable, guest users can read content derived from private assets.
Who is impacted:
- Installations where private source assets can be transformed and transform URLs are reachable.
Security consequence:
- Anonymous
OSV
Craft CMS may expose private assets through anonymous "generate transform" calls via transform URL
osv·2026-03-24
CVE-2026-33160 [LOW] Craft CMS may expose private assets through anonymous "generate transform" calls via transform URL
Craft CMS may expose private assets through anonymous "generate transform" calls via transform URL
### Summary
An unauthenticated user can call `assets/generate-transform` with a private `assetId`, receive a valid transform URL, and fetch transformed image bytes.
The endpoint is anonymous and does not enforce per-asset authorization before returning the transform URL.
### Details
Root cause:
- Anonymous endpoint accepts user-controlled asset reference.
- It creates and returns a transform URL for that asset without checking access rights.
- If the transform output is reachable, guest users can read content derived from private assets.
Who is impacted:
- Installations where private source assets can be transformed and transform URLs are reachable.
Security consequence:
- Anonymous
No detection rules found.
No public exploits indexed.
2026-03-24
Published