What’s Vulnerable › Vulnerabilities

CVE-2025-57520

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-09-10 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• Techhub.P-M Decap Cms: through 3.8.3

References

• https://github.com/decaporg/decap-cms
• https://onurcangenc.com.tr/blog/decap-cms-xss-analysis
• https://onurcangenc.com.tr/posts/cve-2025-57520--stored-xss-in-decap-cms-3-8-3/
• https://onurcangenc.com.tr/posts/cve-2025-57520--stored-xss-in-decap-cms-3-8-3/

Get alerted when CVE-2025-57520 or the next vulnerability affects your stack