by Kastro
Paper/Archive/CVE-2025-66562

CVE-2025-66562

AI-QL tuui — TUUI vulnerable to Remote Code Execution (RCE) via XSS in Markdown ECharts Rendering

EPSS 0.5%CVSS 9.6
critical.is priorityof 100
38
CVSS 9.6 (NVD)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 44.4.444 × 208.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

TUUI is a desktop MCP client designed as a tool unitary utility integration. Prior to 1.3.4, a critical Remote Code Execution (RCE) vulnerability exists in Tuui due to an unsafe Cross-Site Scripting (XSS) flaw in the Markdown rendering component. Tuui allows the execution of arbitrary JavaScript within ECharts code blocks. Combined with an exposed IPC interface that allows spawning processes, an attacker can execute arbitrary system commands on the victim's machine simply by having them view a malicious Markdown message. This vulnerability is fixed in 1.3.4.

Affected

ProductAffectedFixed inSource
tuui< 1.3.4–CNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
GitHub_M (CNA)8.9CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/AI-QL/tuui/security/advisories/GHSA-qjhq-rgmr-6c3grefgithub.com/AI-QL/tuui/commit/f673fa5b4d76e8236c7d9506d0727875cfa79cc1refgithub.com/AI-QL/tuui/releases/tag/v1.3.4