GCD AI RADAR
incidents/AIR-2026-0434

CVE-2026-23733: Lobe Chat Cross-Site Scripting via Mermaid Artifact Renderer

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerability

A stored cross-site scripting vulnerability exists in the Mermaid diagram renderer component of Lobe Chat. Attackers can execute arbitrary JavaScript within the application context, escalating to remote code execution.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

Details

type
Attack on AI
An AI model, agent or AI-powered product was the thing exploited, abused or leaked.
categories
  • Infrastructure vulnerability
    CVEs and advisories in AI frameworks, inference servers, MCP servers, AI developer tools and hosting stacks.
owasp llm top 10
mitre atlas
no technique for these categories
Both rows are derived from the type and categories (OWASP 2025 edition, ATLAS release 2026.09), not classified per record. How
severity
2 · Disclosed vulnerability
CVE or vendor advisory, patched or patchable, no confirmed exploitation.
targets
Framework / tooling
products
Lobe Chat
incident date
20 Jan 2026
first reported
20 Jan 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
classifier confidence
0.95 · published at or above 0.80; see the methodology
tags
CVE-2026-23733 · xss · rce
record
created 2026-10-18 07:00Z · updated 2026-10-18 07:00Z · json

Sources · 1

  1. 2026-01-20
    CVE-2026-23733: Lobe Chat affected by Cross-Site Scripting(XSS) that can escalate to Remote Code Execution(RCE)
    GitHub Advisory Database · github.com/advisories/GHSA-4gpc-rhpj-9443

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