Craft CMS External Control of Assumed-Immutable Web Parameter Vulnerability

Technical Severity

CVSS v3.1 Metrics

MEDIUM

5.3 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitation Likelihood

EPSS Prediction

33.06 %

Predictive Probability

Percentile Rank

96.9 th

Documented as more likely to be exploited than 96.9% of known CVEs.

Detection Date

Jun 02, 2025

Remediation Due

Jun 23, 2025

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

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

NVD

National Vulnerability Database

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