CVE-2025-35939 - Craft CMS External Control of Assumed-Immutable Web Parameter Vulnerability

Vulnerability Name

Craft CMS External Control of Assumed-Immutable Web Parameter Vulnerability

Description

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.

Known To Be Used in Ransomware Campaigns?

Unknown

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.

Additional Notes

https://github.com/craftcms/cms/pull/17220

https://nvd.nist.gov/vuln/detail/CVE-2025-35939

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