Orval: Generation-time SSRF + remote/local file inclusion via unrestricted $ref

published 2026-08-19 2 mo ago modified 2026-09-09 1 mo ago also EUVD-2026-62659 , GHSA-cxq5-97v7-87j8

cvss: 7.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits: 0; none known

Orval generates type-safe JavaScript clients in TypeScript from OpenAPI v3 and Swagger v2 specifications. Prior to 8.22.0, Orval resolves remote and local external $ref values without an allowlist or confinement to the input directory. Processing an attacker-controlled OpenAPI description can cause requests from the developer or CI host to attacker-selected or internal HTTP services, read absolute or out-of-tree local files, and inline untrusted remote schemas into generated clients. The affected code is packages/orval/src/import-specs.ts external reference loading. This issue is fixed in version 8.22.0.

Patch / fix

fixed in 2 links 5

npm orval 8.22.0
orval orval 8.22.0

github.com/orval-labs/orval@23786c0 commit
github.com/orval-labs/orval@8ef1bfd commit
github.com/orval-labs/orval#3723 pull request
github.com/orval-labs/orval#3692 pull request
github.com/orval-labs/orval/releases/tag/v8.22.0 release

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 2 mo ago (2026-08-19)

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/orval-labs/orval/security/advisories/GHSA-cxq5-97v7-87j8 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
GitHub	3.1	7.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
npm	orval	<8.22.0	8.22.0

Affected products

orval-labs orval

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory
CWE-829 Inclusion of Functionality from Untrusted Control Sphere
CWE-918 Server-Side Request Forgery

References

Sources

Fencer Vulns 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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary