An algorithmic complexity vulnerability in Parse Server enables unauthenticated attackers to trigger resource exhaustion and service denial.

This issue is classified as CWE-407: Inefficient Algorithmic Complexity. An unauthenticated attacker can supply specially crafted inputs that cause the application to consume excessive CPU or memory resources, effectively leading to a denial-of-service.

Successful exploitation results in service downtime, directly impacting the availability of applications relying on Parse Server as a backend. With a CVSS score of 8.7, this vulnerability poses a high risk to business continuity, as it allows attackers to disrupt critical operations without requiring prior authentication.

Immediate Action: Update parse-server to version 8.6.82 or 9.9.1-alpha.12 (or newer) to resolve the underlying algorithmic inefficiency.

Proactive Monitoring: Monitor server CPU and memory usage metrics for sudden, sustained spikes that may indicate an ongoing denial-of-service attack.

Compensating Controls: Implement rate limiting and request timeouts at the load balancer or API gateway level to mitigate the impact of resource-intensive requests.

Public Exploit Available: false

Given the ease of triggering a denial-of-service via this vulnerability, immediate patching is required. Organizations should prioritize updating their Parse Server deployments to ensure service availability and prevent potential service disruption by malicious actors.