Code execution via unescaped multipart property names
Published Sep 23, 2026 · Updated Sep 23, 2026
Code injection in Orval @orval/core before 8.28.0 allows attackers to execute JavaScript through crafted OpenAPI property names. The form-data serializer writes multipart property names into generated template literals without escaping ${...} interpolation syntax. Exploitation requires a consumer to generate a client from an attacker-controlled schema and build a FormData request body, executing the expression with that process's privileges.
Summary
What happened
Code injection in Orval @orval/core before 8.28.0 allows attackers to execute JavaScript through crafted OpenAPI property names. The form-data serializer writes multipart property names into generated template literals without escaping ${...} interpolation syntax. Exploitation requires a consumer to generate a client from an attacker-controlled schema and build a FormData request body, executing the expression with that process's privileges.
The record
- CVE
- CVE-2026-96758
- Published
- Sep 23, 2026
- Updated
- Sep 23, 2026
- Vendor
- Orval
- Product
- Orval
- Classifications
- T1059.007
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 23, 2026CVE publishedPublication date reported by the CVE source.
- Sep 23, 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=0 <8.28.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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.
Activity data is delayed. The latest report is Sep 28, 2026.
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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