by Kastro
Paper/Archive/CVE-2026-96757

CVE-2026-96757

orval-labs orval — orval before 8.29.0 Code Injection via unescaped OpenAPI media-type

EPSS 0.8%public exploitCVSS 9.8
critical.is priorityof 100
51
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 57.1.571 × 2011.4Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
orval6.7.1 – < 8.29.08.29.0CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8padvisorygithub.com/orval-labs/orval/security/advisories/GHSA-rcpr-mq4m-jx9jpatchgithub.com/orval-labs/orval/pull/4007patchgithub.com/orval-labs/orval/commit/43af282d62dca0ef3140023741fb768f6a718adbpatchgithub.com/orval-labs/orval/commit/a2d4af59f3b167dc8a7a65d15f51cdb89ebe2fe5writeupgithub.com/orval-labs/orval/blob/v8.28.1/packages/fetch/src/index.ts#L584refgithub.com/orval-labs/orvalwriteupvulncheck.com/advisories/orval-before-8.29.0-code-injection-via-unescaped-openapi-media-type