CVE-2025-26210

PoC ×2—

CVSS 3.1

8.8 high

EPSS

<1%p46

Published

Sep 3, 2025 (Sep 3, 2025)

Modified

Jun 17, 2026

Description

DeepSeek R1 through V3.1 allows XSS, as demonstrated by JavaScript execution in the context of the run-html-chat.deepseeksvc.com domain. NOTE: some third parties have indicated that this is intended behavior.

Vendors: deepseek
Products: deepseek-r1, deepseek-v2, deepseek-v3
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.6%)

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