CVE-2026-109301 parse-community CVE debrief

Who should care

Defenders responsible for Parse Server deployments with Cloud Code triggers or LiveQuery enabled, especially if public write access or sign-up is allowed, should assess exposure and potential impact. They should prioritize verifying exposure and assessing potential impact due to the vulnerability's potential for denial of service and disruption of service or data processing.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact due to the vulnerability's potential for denial of service and disruption of service or data processing in Parse Server deployments with Cloud Code triggers or LiveQuery enabled.

• Potential denial of service due to uncaught exceptions
• Possible disruption of service or data processing
• Need for verification of exposure and impact
• Potential for attackers to crash the server or break subsequent requests

Technical summary

Parse Server before 8.6.95 and 9.0.0 before 9.10.2-alpha.3 does not resolve file references lacking a URL before passing objects to Cloud Code triggers and LiveQuery, causing an uncaught exception that terminates the process. Attackers able to write to a class with Cloud Code save, find, or delete triggers or LiveQuery enabled can crash the server or break subsequent requests, potentially disrupting service or data processing in Parse Server deployments with Cloud Code triggers or LiveQuery enabled, especially if public write access or sign-up is allowed.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact, focusing on Parse Server deployments with Cloud Code triggers or LiveQuery enabled, especially if public write access or sign-up is allowed.

Recommended defensive actions

• Verify Parse Server version and configuration
• Assess exposure and potential impact
• Implement compensating controls and monitoring
• Review vendor guidance and apply patches
• Conduct exposure review for Cloud Code triggers and LiveQuery
• Implement asset inventory and tracking
• Enable monitoring and detection for suspicious activity

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on potential exploitation or victim impact. Defenders should verify exposure and assess potential impact, focusing on Parse Server deployments with Cloud Code triggers or LiveQuery enabled. The vulnerability allows attackers to crash the server or break subsequent requests, potentially disrupting service or data processing.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.