Description

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a stored cross-site scripting vulnerability in SEO-related fields (SEO Title and Meta Description), where user-controlled input is rendered without proper output encoding into HTML contexts including <title> tags, <meta> attributes, and JSON-LD structured data. An attacker can inject a payload such as "></title><script>alert(1)</script> to break out of the intended HTML context and execute arbitrary JavaScript in the browser of any authenticated user who views the affected page. This can be leveraged to perform authenticated API requests, access sensitive data such as usernames, email addresses, and roles via internal APIs, and exfiltrate it to an attacker-controlled server. This issue has been fixed in version 4.29.0.

INFO

Published Date :

2026-04-15T19:34:23.648Z

Last Modified :

2026-04-16T14:14:58.325Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-35569 vulnerability.

Vendors Products
Apostrophecms
  • Apostrophecms
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35569.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact