Denial of service via query-planner optimization bypass
Published Apr 7, 2025 · Updated Apr 8, 2025
Denial of service in Apollo Router Core before 1.61.2 and 2.0.0-alpha.0 through versions before 2.1.1 allows remote attackers to hang the service. Deeply nested, reused named fragments generate many selections that bypass a query-planning optimization, while the planner enforces no timeout and can exhaust its thread pool. Deployments without strict persisted-query safelisting accept the crafted queries; the documented consequence is router inoperability, not data access or modification.
Summary
What happened
Denial of service in Apollo Router Core before 1.61.2 and 2.0.0-alpha.0 through versions before 2.1.1 allows remote attackers to hang the service. Deeply nested, reused named fragments generate many selections that bypass a query-planning optimization, while the planner enforces no timeout and can exhaust its thread pool. Deployments without strict persisted-query safelisting accept the crafted queries; the documented consequence is router inoperability, not data access or modification.
The record
- CVE
- CVE-2025-32032
- Published
- Apr 7, 2025
- Updated
- Apr 8, 2025
- Vendor
- Apollo GraphQL
- Product
- Apollo Router Core
- Classifications
- CWE-770, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 7, 2025CVE publishedPublication date reported by the CVE source.
- Apr 8, 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=< 1.61.2
- Affected versionversion=>= 2.0.0-alpha.0, < 2.1.1
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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