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Fencer Intel
low 3.1

CVE-2026-105795 json

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

published last mo. modified last mo. also EUVD-2026-93424 , GHSA-6gw6-rv2g-25mg

cvss
3.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

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.

Patch / fix

  • nuget Microsoft.OpenApi.Kiota 1.35.0
  • nuget Microsoft.OpenApi.Kiota.Builder 1.35.0
  • microsoft kiota 1.35.0
  • microsoft microsoft.openapi.kiota 1.35.0
  • microsoft microsoft.openapi.kiota.builder 1.35.0

Is CVE-2026-105795 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
GitHub 3.1 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
nuget Microsoft.OpenApi.Kiota
>=1.25.1, <1.35.0
1.35.0
nuget Microsoft.OpenApi.Kiota.Builder
>=1.25.1, <1.35.0
1.35.0

Affected products

  • microsoft kiota
  • microsoft Microsoft.OpenApi.Kiota
  • microsoft Microsoft.OpenApi.Kiota.Builder

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.