CVE-2026-96757: orval · Code Injection
Affects orvalSource CVE Database V5
Not known to be exploited · CVSS 9.3 Critical : upgrade to 8.29.0 as a priority.
Data as of 6 Nov 2026, 23:24 UTC
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.29.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 23 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.
What to do
Upgrade orval to 8.29.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| orval-labsorval | Affected
| Fixed in
|
AI-suggested
A fixed version of orval is available starting from version 8.29.0. Users should upgrade to orval 8.29.0 or later to remediate this vulnerability. Patch status is confirmed by the version range indicating affected versions are those before 8.29.0. No additional mitigations are specified.
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
- github.com/orval-labs/orval/security/advisories/GHSA-4q3x-rqfw-3x8p (opens in a new tab)
- github.com/orval-labs/orval/security/advisories/GHSA-rcpr-mq4m-jx9j (opens in a new tab)
- github.com/orval-labs/orval/pull/4007 (opens in a new tab)
- github.com/orval-labs/orval/commit/43af282d62dca0ef3140023741fb768f6a718adb (opens in a new tab)
- github.com/orval-labs/orval/commit/a2d4af59f3b167dc8a7a65d15f51cdb89ebe2fe5 (opens in a new tab)
- github.com/orval-labs/orval/blob/v8.28.1/packages/fetch/src/index.ts (opens in a new tab)
- github.com/orval-labs/orval (opens in a new tab)
- vulncheck.com/advisories/orval-before-8.29.0-code-injection-via-unescaped-openapi-media-type (opens in a new tab)