CVE-2026-30965

9.1 CRITICAL
Published: March 10, 2026 Modified: March 11, 2026
View on NVD

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.5.2-alpha.8 and 8.6.21, a vulnerability in Parse Server's query handling allows an authenticated or unauthenticated attacker to exfiltrate session tokens of other users by exploiting the redirectClassNameForKey query parameter. Exfiltrated session tokens can be used to take over user accounts. The vulnerability requires the attacker to be able to create or update an object with a new relation field, which depends on the Class-Level Permissions of at least one class. This vulnerability is fixed in 9.5.2-alpha.8 and 8.6.21.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/parse-community/parse-server/releases/tag/8.6.21
Source: security-advisories@github.com
Product Release Notes
https://github.com/parse-community/parse-server/releases/tag/9.5.2-alpha.8
Source: security-advisories@github.com
Product Release Notes
https://github.com/parse-community/parse-server/security/advisories/GHSA-6r2j-cxgf-495f
Source: security-advisories@github.com
Vendor Advisory Mitigation

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.1 / 10.0
EPSS (Exploit Probability)
0.1%
18th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

parseplatform