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.
History

Wed, 11 Mar 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Parseplatform
Parseplatform parse-server
CPEs cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:parseplatform:parse-server:9.5.2:alpha7:*:*:*:node.js:*:*
Vendors & Products Parseplatform
Parseplatform parse-server
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Wed, 11 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 11 Mar 2026 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Parse Community
Parse Community parse Server
Vendors & Products Parse Community
Parse Community parse Server

Tue, 10 Mar 2026 21:00:00 +0000

Type Values Removed Values Added
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.
Title Parse Server session token exfiltration via `redirectClassNameForKey` query parameter
Weaknesses CWE-863
References
Metrics cvssV4_0

{'score': 9.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-10T20:43:52.328Z

Updated: 2026-03-11T14:27:48.323Z

Reserved: 2026-03-07T17:53:48.815Z

Link: CVE-2026-30965

cve-icon Vulnrichment

Updated: 2026-03-11T14:27:41.224Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-10T21:16:48.820

Modified: 2026-03-11T15:31:39.400

Link: CVE-2026-30965

cve-icon Redhat

No data.