CVE-2026-73851 (GCVE-0-2026-73851)
Vulnerability from cvelistv5
Published
2026-08-17 15:11
Modified
2026-08-17 15:26
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Summary
Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.34.0, an attacker who controls or tampers with the OpenAPI description consumed by Kiota can supply a file reference that resolves outside the manifest package (e.g. ../../../../etc/passwd, an absolute path, or a file:// / http(s):// URI). When the generated manifest is deployed and consumed by an AI host, this can lead to inclusion or disclosure of files outside the intended package boundary. This vulnerability is fixed in 1.29.1 and 1.34.0.
Impacted products
Vendor Product Version
microsoft kiota Version: >= 1.30.0, < 1.34.0
Version: < 1.29.1
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-73851",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-17T15:26:24.544956Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-17T15:26:40.140Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kiota",
          "vendor": "microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.30.0, \u003c 1.34.0"
            },
            {
              "status": "affected",
              "version": "\u003c 1.29.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.34.0, an attacker who controls or tampers with the OpenAPI description consumed by Kiota can supply a file reference that resolves outside the manifest package (e.g. ../../../../etc/passwd, an absolute path, or a file:// / http(s):// URI). When the generated manifest is deployed and consumed by an AI host, this can lead to inclusion or disclosure of files outside the intended package boundary. This vulnerability is fixed in 1.29.1 and 1.34.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "NONE",
            "userInteraction": "ACTIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-829",
              "description": "CWE-829: Inclusion of Functionality from Untrusted Control Sphere",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T15:11:39.724Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/microsoft/kiota/security/advisories/GHSA-p5rm-jg5c-8c77",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/microsoft/kiota/security/advisories/GHSA-p5rm-jg5c-8c77"
        },
        {
          "name": "https://github.com/microsoft/kiota/issues/7912",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/issues/7912"
        },
        {
          "name": "https://github.com/microsoft/kiota/pull/7910",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/pull/7910"
        },
        {
          "name": "https://github.com/microsoft/kiota/pull/7913",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/pull/7913"
        },
        {
          "name": "https://github.com/microsoft/kiota/commit/430008e9d700b3fe80f206c672415cfbd8e830e7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/commit/430008e9d700b3fe80f206c672415cfbd8e830e7"
        },
        {
          "name": "https://github.com/microsoft/kiota/commit/de3d18d9fe31ced4ac749728d3a2f94811f59268",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/commit/de3d18d9fe31ced4ac749728d3a2f94811f59268"
        },
        {
          "name": "https://github.com/microsoft/kiota/releases/tag/v1.29.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/releases/tag/v1.29.1"
        },
        {
          "name": "https://github.com/microsoft/kiota/releases/tag/v1.34.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/microsoft/kiota/releases/tag/v1.34.0"
        }
      ],
      "source": {
        "advisory": "GHSA-p5rm-jg5c-8c77",
        "discovery": "UNKNOWN"
      },
      "title": "Kiota: Path traversal in generated plugin manifest static_template.file reference (percent-encoding bypass)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-73851",
    "datePublished": "2026-08-17T15:11:39.724Z",
    "dateReserved": "2026-08-13T17:44:28.644Z",
    "dateUpdated": "2026-08-17T15:26:40.140Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-73851\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-17T15:26:24.544956Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-17T15:26:33.630Z\"}}], \"cna\": {\"title\": \"Kiota: Path traversal in generated plugin manifest static_template.file reference (percent-encoding bypass)\", \"source\": {\"advisory\": \"GHSA-p5rm-jg5c-8c77\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 6.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N\", \"userInteraction\": \"ACTIVE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"HIGH\", \"vulnConfidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"microsoft\", \"product\": \"kiota\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 1.30.0, \u003c 1.34.0\"}, {\"status\": \"affected\", \"version\": \"\u003c 1.29.1\"}]}], \"references\": [{\"url\": \"https://github.com/microsoft/kiota/security/advisories/GHSA-p5rm-jg5c-8c77\", \"name\": \"https://github.com/microsoft/kiota/security/advisories/GHSA-p5rm-jg5c-8c77\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/microsoft/kiota/issues/7912\", \"name\": \"https://github.com/microsoft/kiota/issues/7912\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/microsoft/kiota/pull/7910\", \"name\": \"https://github.com/microsoft/kiota/pull/7910\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/microsoft/kiota/pull/7913\", \"name\": \"https://github.com/microsoft/kiota/pull/7913\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/microsoft/kiota/commit/430008e9d700b3fe80f206c672415cfbd8e830e7\", \"name\": \"https://github.com/microsoft/kiota/commit/430008e9d700b3fe80f206c672415cfbd8e830e7\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/microsoft/kiota/commit/de3d18d9fe31ced4ac749728d3a2f94811f59268\", \"name\": \"https://github.com/microsoft/kiota/commit/de3d18d9fe31ced4ac749728d3a2f94811f59268\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/microsoft/kiota/releases/tag/v1.29.1\", \"name\": \"https://github.com/microsoft/kiota/releases/tag/v1.29.1\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/microsoft/kiota/releases/tag/v1.34.0\", \"name\": \"https://github.com/microsoft/kiota/releases/tag/v1.34.0\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.34.0, an attacker who controls or tampers with the OpenAPI description consumed by Kiota can supply a file reference that resolves outside the manifest package (e.g. ../../../../etc/passwd, an absolute path, or a file:// / http(s):// URI). When the generated manifest is deployed and consumed by an AI host, this can lead to inclusion or disclosure of files outside the intended package boundary. This vulnerability is fixed in 1.29.1 and 1.34.0.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-22\", \"description\": \"CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-829\", \"description\": \"CWE-829: Inclusion of Functionality from Untrusted Control Sphere\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-08-17T15:11:39.724Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-73851\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-17T15:26:40.140Z\", \"dateReserved\": \"2026-08-13T17:44:28.644Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-08-17T15:11:39.724Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


Loading…

Loading…