CVE-2026-96759 json
orval before 8.29.0 Code Injection via operationId
published 2mo ago modified last mo. also EUVD-2026-85409 , GHSA-vv88-cm6j-665j
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository orval-labs/orval. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
orval before 8.29.0 fails to escape the operationId parameter when emitting it into generated TanStack Query mutator options metadata objects. Attackers can inject arbitrary JavaScript code through a crafted operationId in an OpenAPI specification that executes when generated hooks are called.
Patch / fix
- npm orval >=8.29.0
- orval-labs orval 8.29.0
- github.com/orval-labs/orval@b28c53f commit
- github.com/orval-labs/orval#4008 pull request
Is CVE-2026-96759 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- last mo.
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- github.com https://github.com/orval-labs/orval/security/advisories/GHSA-vv88-cm6j-665j referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | orval | <=8.27.0 |
>=8.29.0 |
Affected products
- orval-labs orval
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
github.com
/orval-labs/orval/pull/4008
patch, issue-tracking
-
github.com
/orval-labs/orval/commit/b28c53f3e0c06190e0f6ea136737e6316432448f
patch
-
github.com
/orval-labs/orval/security/advisories/GHSA-vv88-cm6j-665j
vendor-advisory, exploit, advisory
-
github.com
/orval-labs/orval/blob/v8.28.1/packages/query/src/query-generator.ts#L784
technical-description
-
github.com
/orval-labs/orval
product
-
vulncheck.com
/advisories/orval-before-8.29.0-code-injection-via-operationid
third-party-advisory
Sources
- CVE List CVE-2026-96759
- NVD CVE-2026-96759
- Maintainer advisory GHSA-vv88-cm6j-665j
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of orval-labs/orval published their own advisory on GitHub. Reviewed sources take precedence over it.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.