CVE-2026-43900 DeepChat: Persistent DOM XSS via HTML Entity Encoding in `<antArtifact>` SVG Rendering (Bypass of `svgSanitizer.ts`)

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...

CVE-2026-43900

DeepChat vuln CVE-2026-43900 affects the SvgArtifact rendering path. The sanitizer in src/main/lib/svgSanitizer.ts scrubs javascript: protocols with plain-text regex but fails to account for HTML entity decoding before Vue’s v-html insertion in SvgArtifact.vue. Crafting an SVG artifact with obfus...

Cross-site Scripting (XSS)

Overview Affected versions of this package are vulnerable to Cross-site Scripting XSS via the rendering of object names in the GetArtifactFile function. An attacker can execute arbitrary JavaScript in another user's browser by crafting malicious workflows that produce an HTML artifact enabling...