Craft CMS has Server-Side Request Forgery (SSRF) with Asset Uploads Mutations
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Craft CMS | cms | 5.0.0-RC1 to before 5.9.15; 4.0.0-RC1 to before 4.17.9 | 5.9.15, 4.17.9 | Patch available | CNA |
| — | craftcms/cms (Packagist) | 5.0.0-RC1 to before 5.9.15 | 5.9.15 | Patch available | GHSA-3m9m-24vh-39wx |
| — | craftcms/cms (Packagist) | 4.0.0-RC1 to before 4.17.9 | 4.17.9 | Patch available | GHSA-3m9m-24vh-39wx |
- cms VendorCraft CMS Affected 5.0.0-RC1 to before 5.9.15; 4.0.0-RC1 to before 4.17.9 Fixed in 5.9.15, 4.17.9 Patch available CNA
- craftcms/cms (Packagist) Vendor— Affected 5.0.0-RC1 to before 5.9.15 Fixed in 5.9.15 Patch available GHSA-3m9m-24vh-39wx
- craftcms/cms (Packagist) Vendor— Affected 4.0.0-RC1 to before 4.17.9 Fixed in 4.17.9 Patch available GHSA-3m9m-24vh-39wx
Remediation
- Fix · CNA cms (craftcms) Fixed in 5.9.15, 4.17.9
- Fix · GHSA-3m9m-24vh-39wx craftcms/cms (Packagist) Fixed in 5.9.15 Advisory →
- Fix · GHSA-3m9m-24vh-39wx craftcms/cms (Packagist) Fixed in 4.17.9 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41129
- 2026-10-03 Alias added: GHSA-3m9m-24vh-39wx
References
More Craft CMS vulnerabilities
- TI-2025-23503 Craft CMS Allows Remote Code Execution KEVCVSS 3.1CRITICAL 10.0
- TI-2024-37138 RCE when PHP `register_argc_argv` config setting is enabled in craftcms/cms KEVCVSS 4.0CRITICAL 9.3
- TI-2025-16994 Potential RCE with a compromised security key in craft/cms KEVCVSS 3.1HIGH 8.1
- TI-2025-24595 Craft CMS stores user-provided content in session files KEVCVSS 4.0MEDIUM 6.9
- TI-2023-22284 Craft CMS Remote Code Execution vulnerability CVSS 3.1CRITICAL 10.0
- TI-2024-25171 Craft CMS up to v3.7.31 was discovered to contain a SQL injection vulnerability via the GraphQL API endpoint. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-41129 · CVE Program
- CVE-2026-41129 · NVD
- FIRST EPSS
- GHSA-3m9m-24vh-39wx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences