Detections
Analytics

CVE-2026-96757

critical

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.

References

https://github.com/orval-labs/orval/security/advisories/GHSA-rcpr-mq4m-jx9j

https://github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p

https://www.vulncheck.com/advisories/orval-before-8.29.0-code-injection-via-unescaped-openapi-media-type

https://github.com/orval-labs/orval/pull/4007

https://github.com/orval-labs/orval/commit/a2d4af59f3b167dc8a7a65d15f51cdb89ebe2fe5

https://github.com/orval-labs/orval/commit/43af282d62dca0ef3140023741fb768f6a718adb

https://github.com/orval-labs/orval/blob/v8.28.1/packages/fetch/src/index.ts#L584

https://github.com/orval-labs/orval

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-85407

Details

Source: Mitre, NVD

Published: 2026-09-23

Updated: 2026-09-23

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base 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

Severity: Critical

EPSS

EPSS: 0.00566