๐Ÿ›ก๏ธ CVE-2026-43900
๐Ÿ”ด CVSS 9.3 โ€” Critical โœ… No Known Exploit CWE-79 NVD
9.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

DeepChat is an open-source artificial intelligence agent platform that unifies models, tools, and agents. Prior to v1.0.4-beta.1, a Cross-Site Scripting (XSS) vulnerability exists due to a discrepancy between the backend validation layer and the frontend browser rendering engine. The SVGSanitizer (src/main/lib/svgSanitizer.ts) restricts script execution by scrubbing javascript: protocols using plain-text regular expressions. However, it fails to account for HTML entity decoding prior to Vue's v-html DOM insertion inside the SvgArtifact.vue component. By feeding an SVG artifact with obfuscated entities (e.g., javascript:alert(1)), an attacker can completely bypass the sanitizer, culminating in arbitrary JavaScript execution when a victim interacts with the rendered SVG Element. This vulnerability is fixed in v1.0.4-beta.1.

Details

Severity CRITICAL
CVSS Score 9.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CWE CWE-79
Public Exploit โœ… No
Source NVD
Published 2026-05-11
Updated 2026-06-02
Modified 2026-05-12
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown โ€” โ€”

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