CVE-2026-57480

high

Description

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.9.1-alpha.12 and 8.6.82, deeply nested $or, $and, and $nor query condition operators in the REST API or LiveQuery query handling could trigger exponential-time processing in the internal query-traversal helper and block the Node.js event loop. This issue is fixed in versions 9.9.1-alpha.12 and 8.6.82.

References

https://github.com/parse-community/parse-server/security/advisories/GHSA-cgxm-vr2f-6fj8

https://github.com/parse-community/parse-server/releases/tag/9.9.1-alpha.12

https://github.com/parse-community/parse-server/releases/tag/8.6.82

https://github.com/parse-community/parse-server/pull/10512

https://github.com/parse-community/parse-server/pull/10511

https://github.com/parse-community/parse-server/commit/1103c7a890e0455ba3dccd4bc5db17efe1789c9a

https://github.com/parse-community/parse-server/commit/0f5d2ad77b422dc904458254548be87397fc6e9b

Details

Source: Mitre, NVD

Published: 2026-07-08

Updated: 2026-07-08

CVSS v4

Base Score: 8.7

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: High