CVE-2026-59860

Kiota: XML Doc-Comment Newline Breakout Code Injection

HIGH
8.7
CVSS Score
Published: July 16, 2026 at 02:34 PM UTC
Updated: October 24, 2026 at 09:10 PM UTC
1 product affected across 1 vendorKiota

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Severity
HIGH8.7
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.32.3, Kiota is affected by a code-generation injection vulnerability in the C# XML documentation-comment sink (the description, externalDocs label, and externalDocs link fields emitted as /// … comments). When text from an OpenAPI description is written into single-line XML doc comments without stripping newline and Unicode line-terminator characters, an attacker can break out of the /// comment line and inject additional code into generated C# clients. This issue is fixed in version 1.32.3.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Affected range stops below 1.29.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.31.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-94

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