CVE-2025-35939: Craft CMS External Control of Assumed-Immutable Web Parameter Vulnerability
Craft CMS contains an external control of assumed-immutable web parameter vulnerability. This vulnerability could allow an unauthenticated client to introduce arbitrary values, such as PHP code, to a known local file location on the server. This vulnerability could be chained with CVE-2024-58136 as represented by CVE-2025-32432.
| Vendor | Craft CMS |
|---|---|
| Product | Craft CMS |
| Date added to KEV | 2025-06-02 |
| Due date (BOD 22-01) | 2025-06-23 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-472 |
| Required action | Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. |
What to do
- Identify every instance of Craft CMS Craft CMS in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Federal civilian agencies must act by 2025-06-23 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2025-35939 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://github.com/craftcms/cms/pull/17220
- https://nvd.nist.gov/vuln/detail/CVE-2025-35939