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CVE-2026-57480
Parse Server: Denial of service via exponential-time processing of deeply nested query operators
High8.7EPSS 0.59%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 4.0 | High8.7 | 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 |
| NVDNVD · Deferred | 4.0 | High8.7 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.59% · top 52% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.
Weakness
Affected products
parse-community · parse-server
- affected >= 9.0.0-alpha.1, < 9.9.1-alpha.12
- affected < 8.6.82
References (7)
- https://github.com/parse-community/parse-server/security/advisories/GHSA-cgxm-vr2f-6fj8 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/parse-community/parse-server/pull/10511 (opens in a new tab)x_refsource_MISC
- https://github.com/parse-community/parse-server/pull/10512 (opens in a new tab)x_refsource_MISC
- https://github.com/parse-community/parse-server/commit/0f5d2ad77b422dc904458254548be87397fc6e9b (opens in a new tab)x_refsource_MISC
- https://github.com/parse-community/parse-server/commit/1103c7a890e0455ba3dccd4bc5db17efe1789c9a (opens in a new tab)x_refsource_MISC
- https://github.com/parse-community/parse-server/releases/tag/8.6.82 (opens in a new tab)x_refsource_MISC
- https://github.com/parse-community/parse-server/releases/tag/9.9.1-alpha.12 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-57480)Record last updated .