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Medium · 6.1 Public exploit CVE-2025-57520 EUVD-2025-27594GHSA-xp8g-32qh-mv28

Decap CMS Cross Site Scripting (XSS) vulnerability

Published Sep 10, 2025 · Updated Sep 11, 2025 · Assigned by mitre

Package: decap-cms Ecosystem: npm

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.

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • onurcangnc/CVE-2025-57520-Stored-XSS-in-Decap-CMS-3.8.3- ★ 0 · Sep 10, 2025

    A stored cross-site scripting (XSS) vulnerability exists in Decap CMS up to version 3.8.3. The issue affects multiple input fields in the **admin interface** and is triggered when a privileged user o…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
npm decap-cms <= 3.8.3 — GHSA-xp8g-32qh-mv28

References