Riskcovery

CVE-2026-53508

oasdiff does not enforce --allow-external-refs=false on the git-revision load path (SSRF / local file read)

State
Published
Severity
6.0 Medium
Published
Aug 31, 2026
Updated
Aug 31, 2026
Reserved
Jun 9, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.06.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NGitHub_M

Weaknesses

  • CWE-73 External Control of File Name or Path
  • CWE-693 Protection Mechanism Failure
  • CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

ProductVersions
oasdiffoasdiff
  • >= 1.13.2, < 1.18.1Affected

References

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