← Back to CVEs

CVE-2026-33508

HIGH

7.5

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.56 and 9.6.0-alpha.45, Parse Server's LiveQuery component does not enforce the requestComplexity.queryDepth configuration setting when processing WebSocket subscription requests. An attacker can send a subscription with deeply nested logical operators, causing excessive recursion and CPU consumption that degrades or disrupts service availability. This issue has been patched in versions 8.6.56 and 9.6.0-alpha.45.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/24/2026

Last Modified3/25/2026

Sourcenvd

Honeypot Sightings0

Affected Products

parseplatform:parse-server

Weaknesses (CWE)

CWE-674

References

https://github.com/parse-community/parse-server/commit/060d27053fb0fadf613c25aabab7fe0c82b7a899(security-advisories@github.com)

https://github.com/parse-community/parse-server/commit/2126fe4e12f9b399dc6b4b6a3fa70cb1825f159b(security-advisories@github.com)

https://github.com/parse-community/parse-server/pull/10259(security-advisories@github.com)

https://github.com/parse-community/parse-server/pull/10260(security-advisories@github.com)

https://github.com/parse-community/parse-server/security/advisories/GHSA-6qh5-m6g3-xhq6(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.