High 8.7Published Jul 8, 2026

CVE-2026-57480Parse Server: Denial of service via exponential-time processing of deeply nested query operators

Updated under an hour ago (Oct 27, 2026, 12:50 PM ET)

Does this affect you?

It affects parse-community parse-server. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for parse-community parse-server

Exploited in the last 30 days

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.

CVSS: 8.7 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-407
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Jul 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

parse-community parse-server parse_community:parse_server (from the name)	from 9.0.0-alpha.1, < 9.9.1-alpha.12; before 8.6.82	CNA record

References

References

https://github.com/parse-community/parse-server/security/advisories/GHSA-cgxm-vr2f-6fj8	x-refsource-confirm
https://github.com/parse-community/parse-server/pull/10511	x-refsource-misc
https://github.com/parse-community/parse-server/pull/10512	x-refsource-misc
https://github.com/parse-community/parse-server/commit/0f5d2ad77b422dc904458254548be87397fc6e9b	x-refsource-misc
https://github.com/parse-community/parse-server/commit/1103c7a890e0455ba3dccd4bc5db17efe1789c9a	x-refsource-misc
https://github.com/parse-community/parse-server/releases/tag/8.6.82	x-refsource-misc
https://github.com/parse-community/parse-server/releases/tag/9.9.1-alpha.12	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.