Medium severityNVD Advisory· Published Aug 17, 2026· Updated Sep 18, 2026
CVE-2026-73851
CVE-2026-73851
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
Microsoft.OpenApi.KiotaNuGet | >= 1.30.0, < 1.34.0 | 1.34.0 |
Microsoft.OpenApi.KiotaNuGet | < 1.29.1 | 1.29.1 |
Affected products
1- Range: <1.29.1, <1.34.0
Patches
Vulnerability mechanics
References
9- github.com/advisories/GHSA-p5rm-jg5c-8c77ghsaADVISORY
- github.com/microsoft/kiota/commit/430008e9d700b3fe80f206c672415cfbd8e830e7nvdWEB
- github.com/microsoft/kiota/commit/de3d18d9fe31ced4ac749728d3a2f94811f59268nvdWEB
- github.com/microsoft/kiota/issues/7912nvdWEB
- github.com/microsoft/kiota/pull/7910nvdWEB
- github.com/microsoft/kiota/pull/7913nvdWEB
- github.com/microsoft/kiota/releases/tag/v1.34.0nvdWEB
- github.com/microsoft/kiota/security/advisories/GHSA-p5rm-jg5c-8c77nvdWEB
- github.com/microsoft/kiota/releases/tag/v1.29.1nvd
News mentions
2- Microsoft: 25 Vulnerabilities Disclosed, Including Exploited Entra ID FlawVypr Intelligence · Aug 20, 2026
- Microsoft Copilot & Windows: Four Vulnerabilities Patched in August 2026 BatchVypr Intelligence · Aug 19, 2026