Vulnerability · Published Jul 8, 2026 · Assigned by GitHub_M
CVE-2026-57480Parse Server: Denial of service via exponential-time processing of deeply nested query operators
High 8.7
In plain English
A high-severity security flaw in parse-server from parse-community. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | parse-server | 9.9.1-alpha.12 | GHSA-cgxm-vr2f-6fj8 |
| npm | parse-server | 8.6.82 | GHSA-cgxm-vr2f-6fj8 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| parse-community | parse-server | >= 9.0.0-alpha.1, < 9.9.1-alpha.12< 8.6.82 |
Weakness: CWE-407 · 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
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