Vulnerability in Craft Cms

CVE-2025-35939

Craft CMS stores arbitrary content provided by unauthenticated users in session files. This content could be accessed and executed, possibly using an independent vulnerability. Craft CMS redirects requests that require authentication to th…

EPSS: 0.331 (97.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

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.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-35939?
CVE-2025-35939 is a medium-severity vulnerability in Craft Cms, classified under CWE-472. CVSS score: 5.3/10. Published 2025-05-07.
How severe is CVE-2025-35939?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2025-35939 known to be exploited?
Yes. CVE-2025-35939 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-06-02), indicating it is being actively exploited. 3 public proof-of-concept repositories are indexed.