SB2026040761 - Cross-site scripting in Parse Server
Published: April 7, 2026
Security Bulletin ID
SB2026040761
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Cross-site scripting (CVE-ID: CVE-2026-31868)
The vulnerability allows a remote attacker to execute arbitrary script in a user's browser in the context of the Parse Server domain.
The vulnerability exists due to cross-site scripting in the file upload handling functionality when processing uploaded HTML-renderable file types and serving them via their URL. A remote attacker can upload a specially crafted file containing malicious script to execute arbitrary script in a user's browser in the context of the Parse Server domain.
User interaction is required to access the uploaded file URL.
Remediation
Install update from vendor's website.