Import-time code execution via query key injection
Published Aug 19, 2026 · Updated Aug 19, 2026
Code injection in Orval before 8.21.0 allows attackers to execute code via crafted query parameter names in OpenAPI input. In packages/zod/src/index.ts, query request-validation generation emits each parameter name as a double-quoted zod.object key without escaping embedded quotes, so a crafted name breaks into object-literal context and injects an evaluated computed property key. Exposure requires generating a zod or hono client from an attacker-controlled specification and importing the generated schema module, which executes during module load in developer, CI, test, or application environments.
Summary
What happened
Code injection in Orval before 8.21.0 allows attackers to execute code via crafted query parameter names in OpenAPI input. In packages/zod/src/index.ts, query request-validation generation emits each parameter name as a double-quoted zod.object key without escaping embedded quotes, so a crafted name breaks into object-literal context and injects an evaluated computed property key. Exposure requires generating a zod or hono client from an attacker-controlled specification and importing the generated schema module, which executes during module load in developer, CI, test, or application environments.
The record
- CVE
- CVE-2026-71865
- Published
- Aug 19, 2026
- Updated
- Aug 19, 2026
- Vendor
- Orval
- Product
- Orval
- Classifications
- CWE-95, CWE-94, CWE-116, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 19, 2026CVE publishedPublication date reported by the CVE source.
- Aug 19, 2026Record 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=< 8.21.0
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
- reproduce.sh and make_spec.py proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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