CVE-2025-26210

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2025-26210
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.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://deepseek.com
https://hackmd.io/@MrqrFIlhQFi7vUwkqbrXDw/deepseek
https://youtu.be/IgQwy52FVT4
Configurations

No configuration.

History

05 Sep 2025, 20:15

Type Values Removed Values Added
References
  • {'url': 'http://deepseek.com', 'source': 'cve@mitre.org'}
  • () https://deepseek.com -
Summary (en) An Cross-Site Scripting (XSS) vulnerability in DeepSeek R1 through V3.1 allows a remote attacker to execute arbitrary code via unspecified input fields. (en) 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.

03 Sep 2025, 14:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-09-03 14:15

Updated : 2025-09-05 20:15

NVD link : CVE-2025-26210

Mitre link : CVE-2025-26210

CVE.ORG link : CVE-2025-26210

JSON object : View

Products Affected

No product.

CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')