High severity · published Jul 8, 2026
CVE-2026-57480
Parse Server: Denial of service via exponential-time processing of deeply nested query operators
8.7
CVSS
0.6%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
parse-server · parse-community
>= 9.0.0-alpha.1, < 9.9.1-alpha.12; < 8.6.82 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57480
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57480
github.com
https://github.com/parse-community/parse-server/commit/0f5d2ad77b422dc904458254548be87397fc6e9b
github.com
https://github.com/parse-community/parse-server/commit/1103c7a890e0455ba3dccd4bc5db17efe1789c9a
github.com
https://github.com/parse-community/parse-server/pull/10511
github.com
https://github.com/parse-community/parse-server/pull/10512
github.com
https://github.com/parse-community/parse-server/releases/tag/8.6.82
github.com
https://github.com/parse-community/parse-server/releases/tag/9.9.1-alpha.12
More from parse-server
10.0
CVE-2026-30966
Parse Server role escalation and CLP bypass via direct `_Join` table write
9.8
CVE-2026-32248
Parse Server: Account takeover via operator injection in authentication data identifier
9.8
CVE-2026-31871
Parse Server has a SQL Injection via dot-notation sub-key name in `Increment` operation on PostgreSQL
9.8
CVE-2026-31856
Parse Server has a SQL injection via `Increment` operation on nested object field in PostgreSQL
9.8
CVE-2026-31840
Parse Server has a SQL injection via dot-notation field name in PostgreSQL