SB2026040765 - Cross-site scripting in Parse Server

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Main Vulnerability Database SB2026040765

SB2026040765 - Cross-site scripting in Parse Server

Published: April 7, 2026

Security Bulletin ID SB2026040765
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Cross-site scripting (CVE-ID: CVE-2026-30948)

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:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear


The vulnerability allows a remote user to execute arbitrary script in the victim's browser in the Parse Server origin.

The vulnerability exists due to cross-site scripting in the file upload handling for SVG files when serving uploaded SVG content inline. A remote user can upload a specially crafted SVG file containing JavaScript to execute arbitrary script in the victim's browser in the Parse Server origin.

User interaction is required for a victim to load the uploaded SVG file, and the issue affects deployments where file upload is enabled for authenticated users.


Remediation

Install update from vendor's website.

References