SB2026040761 - Cross-site scripting in Parse Server

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Main Vulnerability Database SB2026040761

SB2026040761 - Cross-site scripting in Parse Server

Published: April 7, 2026

Security Bulletin ID SB2026040761
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Cross-site scripting (CVE-ID: CVE-2026-31868)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green


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.

References