CVE-2025-26210 describes a Cross-Site Scripting (XSS) vulnerability in DeepSeek R1 through V3.1, allowing JavaScript execution within the run-html-chat.deepseeksvc.com domain. This high-severity vulnerability (CVSS 8.8) has a low attack complexity and could lead to high impacts on confidentiality, integrity, and availability, requiring user interaction for exploitation. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion, though some third parties suggest the behavior might be intended.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.0CPE matchmatch criteria | cpe:2.3:a:deepseek:deepseek-r1:1.0:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:deepseek:deepseek-v2:-:*:*:*:*:*:*:* | ||
1.0CPE matchmatch criteria | cpe:2.3:a:deepseek:deepseek-v3:1.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.
Remediation records are not available for this CVE.