CVE-2026-57480 parse-community CVE debrief

Who should care

Users of Parse Server versions prior to 9.9.1-alpha.12 and 8.6.82 should review and update their installations to prevent potential denial-of-service attacks. This includes reviewing and restricting deeply nested query condition operators in REST API or LiveQuery query handling and monitoring for potential denial-of-service attacks.

Technical summary

Deeply nested $or, $and, and $nor query condition operators in the REST API or LiveQuery query handling of Parse Server 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 users should review and update their installations to prevent potential denial-of-service attacks.

Defensive priority

High priority due to potential for denial-of-service attacks.

Recommended defensive actions

• Update Parse Server to version 9.9.1-alpha.12 or 8.6.82
• Review and restrict deeply nested query condition operators in REST API or LiveQuery query handling
• Monitor for potential denial-of-service attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability and fixed versions. Affected product deployments should be reviewed for potential exposure. The vulnerability is related to deeply nested $or, $and, and $nor query condition operators in the REST API or LiveQuery query handling of Parse Server. Users should verify their installations and review query handling to prevent potential denial-of-service attacks.

Official resources