CVE-2026-43900
- Source
- https://cve.org/CVERecord?id=CVE-2026-43900
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43900.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-43900
- Aliases
-
- GHSA-7r59-67v3-3mgp
- Published
- 2026-05-11T21:42:19.927Z
- Modified
- 2026-07-15T01:49:14.976220151Z
- Severity
-
- 9.3 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N CVSS Calculator
- Summary
- DeepChat: Persistent DOM XSS via HTML Entity Encoding in `<antArtifact>` SVG Rendering (Bypass of `svgSanitizer.ts`)
- Details
-
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.
- Database specific
{ "cwe_ids": [ "CWE-79" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43900.json" }- References