orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
orval-labs orval unaffected
Version Status Constraints
6.7.1 affected < 8.29.0
8.29.0 unaffected —

No data.

No data.

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Project Subscriptions

Vendors Products
Orval Subscribe
Orval Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/orval-labs/orval cve-icon cve-icon
https://github.com/orval-labs/orval/blob/v8.28.1/packages/fetch/src/index.ts#L584 cve-icon cve-icon
https://github.com/orval-labs/orval/commit/43af282d62dca0ef3140023741fb768f6a718adb cve-icon cve-icon
https://github.com/orval-labs/orval/commit/a2d4af59f3b167dc8a7a65d15f51cdb89ebe2fe5 cve-icon cve-icon
https://github.com/orval-labs/orval/pull/4007 cve-icon cve-icon
https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p cve-icon cve-icon
https://github.com/orval-labs/orval/security/advisories/GHSA-rcpr-mq4m-jx9j cve-icon cve-icon
https://www.vulncheck.com/advisories/orval-before-8.29.0-code-injection-via-unescaped-openapi-media-type cve-icon cve-icon
History

Wed, 23 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description orval before 8.29.0 fails to escape OpenAPI media-type keys when emitting them into single-quoted Content-Type string literals in generated code. Attackers can inject JavaScript through crafted media-type keys in OpenAPI specifications that executes when generated fetch operations or mock resolvers are invoked.
Title orval before 8.29.0 Code Injection via unescaped OpenAPI media-type
First Time appeared Orval
Orval orval
Weaknesses CWE-94
CPEs cpe:2.3:a:orval:orval:*:*:*:*:*:*:*:*
Vendors & Products Orval
Orval orval
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-23T17:48:29.041Z

Reserved: 2026-09-23T15:58:30.841Z

Link: CVE-2026-96757

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-23T17:17:24.923

Modified: 2026-09-23T17:17:24.923

Link: CVE-2026-96757

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T17:45:07Z

Weaknesses