Code Injection Vulnerability in Orval OpenAPI Client by Orval Labs
CVE-2026-96759

9.3CRITICAL

Key Information:

Vendor

Orval-labs

Status
Orval
Vendor
CVE Published:
23 September 2026

What is CVE-2026-96759?

The vulnerable Orval OpenAPI Client prior to version 8.29.0 does not properly escape the operationId parameter, enabling attackers to inject arbitrary JavaScript code. This code executes while calling generated hooks, posing a significant security risk when using crafted OpenAPI specifications.

Affected Version(s)

orval 0 < 8.29.0

orval 8.29.0

References

https://github.com/orval-labs/orval/security/advisories/G...
vendor-advisory
https://github.com/orval-labs/orval/pull/4008
patchissue-tracking
https://github.com/orval-labs/orval/commit/b28c53f3e0c061...
patch

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Enrik Mustafa
.