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CVE-2026-39107

MEDIUM

6.3

CVSS Score

Published: June 3, 2026 at 12:00 AM UTC

Updated: July 22, 2026 at 08:24 PM UTC

1 product affected across 1 vendorMoonshot AI Kimi AI

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Severity

MEDIUM6.3

Exploit prediction

EPSS 0.3%

SSVC

PoC

Description

A Cross Site Scripting vulnerability exists in the Kimi AI v1.0 web interface's 'Preview' feature. The application fails to properly sanitize or encode HTML/JavaScript payloads generated by the AI model. When a user switches to the 'Preview' tab to view AI-generated code, the malicious payload is rendered directly into the DOM, leading to arbitrary JavaScript execution in the victim's browser session.

Affected

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

Moonshot AI Kimi AI · Moonshotai

70%

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.

References (2)

Source: cverecord

https://github.com/MGTx2

Source: cverecord

https://github.com/MGTx2/CVE-2026-39107

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

6.3MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: LOW
Integrity: LOW
Availability: LOW

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-79

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