CVE-2025-57520

Name: CVE-2025-57520
Creator: NVD / NIST
Published: 2025-09-10T17:15:33.537+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2025-57520 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A Cross Site Scripting (XSS) vulnerability exists in Decap CMS thru 3.8.3. Input fields such as body, tags, title, and description are not properly sanitized before being rendered in the content preview pane. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

A Cross Site Scripting (XSS) vulnerability exists in Decap CMS thru 3.8.3. Input fields such as body, tags, title, and description are not properly sanitized before being rendered in the content preview pane. This enables an attacker to inject arbitrary JavaScript which executes whenever a user views the preview panel. The vulnerability affects multiple input vectors and does not require user interaction beyond viewing the affected content.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.30%

21.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Techhub.P-M	Decap Cms	<= 3.8.3

References

https://github.com/decaporg/decap-cmsProduct
https://onurcangenc.com.tr/blog/decap-cms-xss-analysisBroken Link
https://onurcangenc.com.tr/posts/cve-2025-57520--stored-xss-in-decap-cms-3-8-3/Exploit, Third Party Advisory
https://onurcangenc.com.tr/posts/cve-2025-57520--stored-xss-in-decap-cms-3-8-3/Exploit, Third Party Advisory

Timeline

Published: Sep 10, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-57520?

How severe is CVE-2025-57520?

CVE-2025-57520 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2025-57520?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-57520?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST