Vulnerability-Lookup

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 7565 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	CPE status
microsoft	kiota	Affected: >= 1.25.1, < 1.35.0	guessed
microsoft	Microsoft.OpenApi.Kiota	Affected: >= 1.25.1, < 1.35.0	guessed
microsoft	Microsoft.OpenApi.Kiota.Builder	Affected: >= 1.25.1, < 1.35.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-105795

Vulnerability from fkie_nvd - Published: 2026-10-06 15:17 - Updated: 2026-10-06 18:16

Severity

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/microsoft/kiota/commit/fc0f219b8a665c4c69be8befcff035ba0eb8e4ce
	security-advisories@github.com	https://github.com/microsoft/kiota/pull/8055
	security-advisories@github.com	https://github.com/microsoft/kiota/releases/tag/v1.35.0
	security-advisories@github.com	https://github.com/microsoft/kiota/security/advisories/GHSA-6gw6-rv2g-25mg

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
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      "affectedData": [
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          "product": "kiota",
          "vendor": "microsoft",
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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"
}

Sightings

Author	Source	Type	Date	Other

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

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

FKIE_CVE-2026-105795

GHSA-6GW6-RV2G-25MG

Impact

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