SB2026040788 - Insufficient verification of data authenticity in Parse Server

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Main Vulnerability Database SB2026040788

SB2026040788 - Insufficient verification of data authenticity in Parse Server

Published: April 7, 2026

Security Bulletin ID SB2026040788
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Insufficient verification of data authenticity (CVE-ID: CVE-2026-27804)

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

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


The vulnerability allows a remote attacker to log in as any user linked to a Google account.

The vulnerability exists due to insufficient verification of data authenticity in the Google auth adapter when processing forged Google authentication tokens. A remote attacker can forge a token with alg set to none to log in as any user linked to a Google account.

Only deployments with Google authentication enabled are vulnerable.


Remediation

Install update from vendor's website.

References