CVE-2026-41318

Popis

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. Prior to version 1.12.1, AnythingLLM-s in-chat markdown renderer has an unsafe custom rule for images that interpolates the markdown image-s `alt` text into an HTML `alt=-...-` attribute without any HTML encoding. Every call-site in the app wraps `renderMarkdown(...)` with `DOMPurify.sanitize(...)` as defense-in-depth — except the `Chartable` component, which renders chart captions with no sanitization. The chart caption is the natural-language text the LLM emits around a `create-chart` tool call, so any attacker who can influence the LLM-s output — most cheaply via indirect prompt injection in a shared workspace document, or directly if they can create a chart record in a multi-user workspace — can trigger stored DOM-level XSS in every other user-s browser when they open that conversation. AnythingLLM chat history is loaded server-side via `GET /api/workspace/:sl...