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    2 vulnerabilities found for oasdiff-action by oasdiff

    CVE-2026-53507 (GCVE-0-2026-53507)

    Vulnerability from nvd – Published: 2026-08-31 18:57 – Updated: 2026-09-01 14:46
    VLAI
    Title
    oasdiff actions resolve external $refs by default, enabling SSRF and disclosure of structured files on pull-request runs
    Summary
    oasdiff-action is a GitHub Action that detects breaking changes in OpenAPI specs and post a review on every pull request. Before version 0.0.51, the oasdiff actions resolved external $refs in the OpenAPI spec by default (allow-external-refs: true). When an action runs on a pull request whose spec is attacker-controlled — most importantly fork pull requests on public repositories — a $ref in that spec is fetched/read on the runner with no interaction required, enabling SSRF and disclosure of structured files on the runner. This issue has been patched in version 0.0.51.
    Severity
    8.3 (High)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-01 14:46 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    • CWE-918 - Server-Side Request Forgery (SSRF)
    • CWE-1188 - Insecure Default Initialization of Resource
    Assigner
    References
    Impacted products
    Vendor Product Version
    oasdiff oasdiff-action Affected: < 0.0.51
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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        "title": "CISA ADP Vulnrichment"
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        }
      ],
      "metrics": [
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    CVE-2026-53507 (GCVE-0-2026-53507)

    Vulnerability from cvelistv5 – Published: 2026-08-31 18:57 – Updated: 2026-09-01 14:46
    VLAI
    Title
    oasdiff actions resolve external $refs by default, enabling SSRF and disclosure of structured files on pull-request runs
    Summary
    oasdiff-action is a GitHub Action that detects breaking changes in OpenAPI specs and post a review on every pull request. Before version 0.0.51, the oasdiff actions resolved external $refs in the OpenAPI spec by default (allow-external-refs: true). When an action runs on a pull request whose spec is attacker-controlled — most importantly fork pull requests on public repositories — a $ref in that spec is fetched/read on the runner with no interaction required, enabling SSRF and disclosure of structured files on the runner. This issue has been patched in version 0.0.51.
    Severity
    8.3 (High)
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-01 14:46 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    • CWE-918 - Server-Side Request Forgery (SSRF)
    • CWE-1188 - Insecure Default Initialization of Resource
    Assigner
    References
    Impacted products
    Vendor Product Version
    oasdiff oasdiff-action Affected: < 0.0.51
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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        "title": "CISA ADP Vulnrichment"
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