CVE-2025-57520
Decap CMS Cross Site Scripting (XSS) Vulnerability
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.
INFO
Published Date :
Sept. 10, 2025, 5:15 p.m.
Last Modified :
Sept. 16, 2025, 5:35 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Sanitize input in body, tags, title, and description fields.
- Validate and encode all user-generated content.
- Update Decap CMS to a version that addresses this issue.
Public PoC/Exploit Available at Github
CVE-2025-57520 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-57520.
| URL | Resource |
|---|---|
| https://github.com/decaporg/decap-cms | Product |
| https://onurcangenc.com.tr/blog/decap-cms-xss-analysis | Broken 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-57520 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-57520
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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 opens the **content preview panel** of a malicious entry.
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-57520 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-57520 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Sep. 16, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:techhub.p-m:decap_cms:*:*:*:*:*:*:*:* versions up to (including) 3.8.3 Added Reference Type MITRE: https://github.com/decaporg/decap-cms Types: Product Added Reference Type MITRE: https://onurcangenc.com.tr/blog/decap-cms-xss-analysis Types: Broken Link Added Reference Type CISA-ADP: https://onurcangenc.com.tr/posts/cve-2025-57520--stored-xss-in-decap-cms-3-8-3/ Types: Exploit, Third Party Advisory Added Reference Type MITRE: https://onurcangenc.com.tr/posts/cve-2025-57520--stored-xss-in-decap-cms-3-8-3/ Types: Exploit, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 11, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CWE CWE-79 Added Reference https://onurcangenc.com.tr/posts/cve-2025-57520--stored-xss-in-decap-cms-3-8-3/ -
New CVE Received by [email protected]
Sep. 10, 2025
Action Type Old Value New Value Added 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. Added Reference https://github.com/decaporg/decap-cms Added Reference https://onurcangenc.com.tr/blog/decap-cms-xss-analysis Added Reference https://onurcangenc.com.tr/posts/cve-2025-57520--stored-xss-in-decap-cms-3-8-3/