CVE-2026-32944
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.21 and 8.6.45, an unauthenticated attacker can crash the Parse Server process by sending a single request with deeply nested query condition operators. This terminates the server and denies service to all connected clients. Starting in version 9.6.0-alpha.21 and 8.6.45, a depth limit for query condition operator nesting has been added via the `requestComplexity.queryDepth` server option. The option is disabled by default to avoid a breaking change. To mitigate, upgrade and set the option to a value appropriate for your app. No known workarounds are available.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.7
- CVSS 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
- EPSS probability
- 0.48%
- CWE
- CWE-674
- Published
- 2026-03-18
- Last modified
- 2026-03-19
Affected products
- parse-community parse-server
- parse-community parse-server
Weakness type
Related vulnerabilities
- CVE-2026-88763 — Skupper-router: skupper-router: unbounded recursion in amqp field parser leads to denial of service
- CVE-2026-22591 — Fast DDS DDSSQLFilter Recursive Parser Stack Exhaustion (Remote DoS)
- CVE-2026-19201 — Denial of Service via Unbounded Recursion in go-attestation Windows SIPA Parser
- CVE-2026-69378 — Microsoft Exchange Server Denial of Service Vulnerability
- CVE-2026-73321 — XenForo < 2.3.13 Uncontrolled Recursion DoS via BBCode Parser
- CVE-2026-11573 — QDomDocument::toByteArray() crashes when parsing svg file
- CVE-2026-17440 — IBM App Connect Enterprise and IBM Integration Bus for z/OS Adapter nodes are vulnerable to multiple CVEs
- CVE-2026-77465 — toml-node: Uncontrolled Recursion