CVE-2026-53508 — oasdiff does not enforce --allow-external-refs=false on the git-revision load path (SSRF / local file read)
oasdiff is a command-line and Go package that compares and detects breaking changes in OpenAPI specs. From version 1.13.2 through version 1.18.0, oasdiff did not enforce --allow…
Published: 2026-08-31 · CVSS: 6.0 · CVSS 4.0
oasdiff is a command-line and Go package that compares and detects breaking changes in OpenAPI specs. From version 1.13.2 through version 1.18.0, oasdiff did not enforce --allow-external-refs=false (library: openapi3.Loader.IsExternalRefsAllowed = false) when loading a spec from a git revision (the rev:path form, e.g. main:openapi.yaml). External $refs were resolved on that load path even when external refs were explicitly disabled, so the mitigation silently did not apply there. This issue has been patched in version 1.18.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7