Server crash via recursive GraphQL fragment validation
Published Aug 1, 2022 · Updated Apr 22, 2025
Uncontrolled recursion in GraphQL validation in GraphQL Rust Juniper before 0.15.10 allows remote attackers to crash the server. The NoFragmentCycles and NoUndefinedVariables rules recursively traverse attacker-supplied fragment-spread chains on the thread stack, so a deeply cyclic query exhausts stack or memory. No authentication or user interaction is required when a consuming application exposes its GraphQL endpoint, and the bounded impact is interruption of that server process.
Summary
What happened
Uncontrolled recursion in GraphQL validation in GraphQL Rust Juniper before 0.15.10 allows remote attackers to crash the server. The NoFragmentCycles and NoUndefinedVariables rules recursively traverse attacker-supplied fragment-spread chains on the thread stack, so a deeply cyclic query exhausts stack or memory. No authentication or user interaction is required when a consuming application exposes its GraphQL endpoint, and the bounded impact is interruption of that server process.
The record
- CVE
- CVE-2022-31173
- Published
- Aug 1, 2022
- Updated
- Apr 22, 2025
- Vendor
- GraphQL Rust
- Product
- Juniper
- Classifications
- CWE-674, CWE-400, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 1, 2022CVE publishedPublication date reported by the CVE source.
- Apr 22, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 0.15.10
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Nested cyclic fragment proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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