What is CVE-2026-39107?

CVE-2026-39107 is a medium-severity vulnerability in N/a, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2026-06-03.

How severe is CVE-2026-39107?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Is CVE-2026-39107 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in N/a

CVE-2026-39107

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 'Previe…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (13.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

MGTx2/CVE-2026-39107

References

Frequently asked questions

What is CVE-2026-39107?: CVE-2026-39107 is a medium-severity vulnerability in N/a, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2026-06-03.
How severe is CVE-2026-39107?: Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2026-39107 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.