Vulnerability-Lookup

GHSA-6GW6-RV2G-25MG

Vulnerability from github – Published: 2026-10-06 15:36 – Updated: 2026-10-06 15:36

Summary

Kiota: Unsafe oauth_card_path references in Kiota-generated API plugin manifests

Details

Impact

When generating an API plugin manifest from an attacker-controlled or compromised OpenAPI description, Kiota copies x-ai-capabilities.response_semantics.oauth_card_path into the manifest without validating that it is a safe package-relative file reference. An attacker can supply parent-directory traversal, rooted paths, or absolute URIs instead of a card file within the plugin package.

The unsafe reference is propagated into the generated manifest. Its security effect depends on the downstream host's handling of the reference when the plugin is packaged and deployed. This is not local code execution or a file read performed by Kiota merely during generation. A consuming host that resolves the untrusted reference can cross the intended package boundary or use an unintended authentication card.

Affected versions

The affected NuGet packages are Microsoft.OpenApi.Kiota and Microsoft.OpenApi.Kiota.Builder, starting with version 1.25.1, which introduced this manifest field. The field remains unvalidated through version 1.34.1, including the separate 1.29.1 security-backport release. Version 1.35.0 fixes the issue.

Patches

Upgrade to Kiota 1.35.0 or later and regenerate affected plugin manifests. Kiota now applies the existing safe-file-reference validator to oauth_card_path, drops unsafe references, and emits a warning. Valid relative card paths remain supported.

Fix: https://github.com/microsoft/kiota/pull/8055
Fixed release: https://github.com/microsoft/kiota/releases/tag/v1.35.0

Workarounds

Generate plugins only from trusted, integrity-protected OpenAPI descriptions. Before packaging or deployment, review generated manifests and remove any oauth_card_path that is not a safe relative reference confined to the plugin package. Do not rely on validation of sibling manifest fields to validate this field.

Related advisories

GHSA-4jwf-m4wg-8p66 and GHSA-p5rm-jg5c-8c77 cover static_template.file. Their fixes do not enforce validation at the separate oauth_card_path emission site.

Severity

3.1 (Low)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.OpenApi.Kiota"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.25.1"
            },
            {
              "fixed": "1.35.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.OpenApi.Kiota.Builder"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.25.1"
            },
            {
              "fixed": "1.35.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-105795"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-06T15:36:13Z",
    "nvd_published_at": "2026-10-06T15:17:16Z",
    "severity": "LOW"
  },
  "details": "### Impact\n\nWhen generating an API plugin manifest from an attacker-controlled or compromised OpenAPI description, Kiota copies `x-ai-capabilities.response_semantics.oauth_card_path` into the manifest without validating that it is a safe package-relative file reference. An attacker can supply parent-directory traversal, rooted paths, or absolute URIs instead of a card file within the plugin package.\n\nThe unsafe reference is propagated into the generated manifest. Its security effect depends on the downstream host\u0027s handling of the reference when the plugin is packaged and deployed. This is not local code execution or a file read performed by Kiota merely during generation. A consuming host that resolves the untrusted reference can cross the intended package boundary or use an unintended authentication card.\n\n### Affected versions\n\nThe affected NuGet packages are `Microsoft.OpenApi.Kiota` and `Microsoft.OpenApi.Kiota.Builder`, starting with version 1.25.1, which introduced this manifest field. The field remains unvalidated through version 1.34.1, including the separate 1.29.1 security-backport release. Version 1.35.0 fixes the issue.\n\n### Patches\n\nUpgrade to Kiota 1.35.0 or later and regenerate affected plugin manifests. Kiota now applies the existing safe-file-reference validator to `oauth_card_path`, drops unsafe references, and emits a warning. Valid relative card paths remain supported.\n\n- Fix: https://github.com/microsoft/kiota/pull/8055\n- Fixed release: https://github.com/microsoft/kiota/releases/tag/v1.35.0\n\n### Workarounds\n\nGenerate plugins only from trusted, integrity-protected OpenAPI descriptions. Before packaging or deployment, review generated manifests and remove any `oauth_card_path` that is not a safe relative reference confined to the plugin package. Do not rely on validation of sibling manifest fields to validate this field.\n\n### Related advisories\n\nGHSA-4jwf-m4wg-8p66 and GHSA-p5rm-jg5c-8c77 cover `static_template.file`. Their fixes do not enforce validation at the separate `oauth_card_path` emission site.",
  "id": "GHSA-6gw6-rv2g-25mg",
  "modified": "2026-10-06T15:36:13Z",
  "published": "2026-10-06T15:36:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/kiota/security/advisories/GHSA-6gw6-rv2g-25mg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-105795"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/kiota/pull/8055"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/kiota/commit/fc0f219b8a665c4c69be8befcff035ba0eb8e4ce"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/microsoft/kiota"
    },
    {
      "type": "WEB",
      "url": "https://github.com/microsoft/kiota/releases/tag/v1.35.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Kiota: Unsafe oauth_card_path references in Kiota-generated API plugin manifests"
}

CVE-2026-105795 (GCVE-0-2026-105795)

Vulnerability from cvelistv5 – Published: 2026-10-06 14:19 – Updated: 2026-10-06 17:17

Title

Kiota: Unsafe oauth_card_path references in Kiota-generated API plugin manifests

Summary

Kiota is an OpenAPI based HTTP Client code generator. From 1.25.1 until 1.35.0, Kiota copies x-ai-capabilities.response_semantics.oauth_card_path from an attacker-controlled or compromised OpenAPI description into a generated API plugin manifest without validating that the value is a safe package-relative file reference. Parent-directory traversal, rooted paths, or absolute URIs can therefore reach a consuming host that resolves the reference, allowing the host to cross the intended plugin-package boundary or use an unintended authentication card. Kiota does not itself read a local file or execute code merely while generating the manifest, and impact requires downstream resolution of the unsafe reference. This issue is fixed in version 1.35.0.

Severity

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-06 17:17 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7580 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/microsoft/kiota/security/advis…	x_refsource_CONFIRM
https://github.com/microsoft/kiota/pull/8055	x_refsource_MISC
https://github.com/microsoft/kiota/commit/fc0f219…	x_refsource_MISC
https://github.com/microsoft/kiota/releases/tag/v1.35.0	x_refsource_MISC

Impacted products

3 products

Vendor	Product	Version
microsoft	kiota	Affected: >= 1.25.1, < 1.35.0
microsoft	Microsoft.OpenApi.Kiota	Affected: >= 1.25.1, < 1.35.0
microsoft	Microsoft.OpenApi.Kiota.Builder	Affected: >= 1.25.1, < 1.35.0

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-105795",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-06T17:17:41.953926Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-06T17:17:57.409Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kiota",
          "vendor": "microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.25.1, \u003c 1.35.0"
            }
          ]
        },
        {
          "product": "Microsoft.OpenApi.Kiota",
          "vendor": "microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.25.1, \u003c 1.35.0"
            }
          ]
        },
        {
          "product": "Microsoft.OpenApi.Kiota.Builder",
          "vendor": "microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.25.1, \u003c 1.35.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Kiota is an OpenAPI based HTTP Client code generator. From 1.25.1 until 1.35.0, Kiota copies x-ai-capabilities.response_semantics.oauth_card_path from an attacker-controlled or compromised OpenAPI description into a generated API plugin manifest without validating that the value is a safe package-relative file reference. Parent-directory traversal, rooted paths, or absolute URIs can therefore reach a consuming host that resolves the reference, allowing the host to cross the intended plugin-package boundary or use an unintended authentication card. Kiota does not itself read a local file or execute code merely while generating the manifest, and impact requires downstream resolution of the unsafe reference. This issue is fixed in version 1.35.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T14:19:03.186Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/microsoft/kiota/security/advisories/GHSA-6gw6-rv2g-25mg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/microsoft/kiota/security/advisories/GHSA-6gw6-rv2g-25mg"
        },
        {
          "name": "https://github.com/microsoft/kiota/pull/8055",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/pull/8055"
        },
        {
          "name": "https://github.com/microsoft/kiota/commit/fc0f219b8a665c4c69be8befcff035ba0eb8e4ce",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/commit/fc0f219b8a665c4c69be8befcff035ba0eb8e4ce"
        },
        {
          "name": "https://github.com/microsoft/kiota/releases/tag/v1.35.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/releases/tag/v1.35.0"
        }
      ],
      "source": {
        "advisory": "GHSA-6gw6-rv2g-25mg",
        "discovery": "UNKNOWN"
      },
      "title": "Kiota: Unsafe oauth_card_path references in Kiota-generated API plugin manifests"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-105795",
    "datePublished": "2026-10-06T14:19:03.186Z",
    "dateReserved": "2026-10-05T20:37:19.364Z",
    "dateUpdated": "2026-10-06T17:17:57.409Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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