CVE-2026-41318

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/:slug/chats` and rendered directly into the chat UI. Version 1.12.1 contains a patch for this issue.
Configurations

Configuration 1 (hide)

cpe:2.3:a:mintplexlabs:anythingllm:*:*:*:*:*:*:*:*

History

27 Apr 2026, 14:53

Type Values Removed Values Added
References () https://github.com/Mintplex-Labs/anything-llm/commit/f5fa03f4728e483949f6360093bc3ea1ef555535 - () https://github.com/Mintplex-Labs/anything-llm/commit/f5fa03f4728e483949f6360093bc3ea1ef555535 - Patch
References () https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-4q6m-qh3w-9gf5 - () https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-4q6m-qh3w-9gf5 - Exploit, Vendor Advisory
First Time Mintplexlabs
Mintplexlabs anythingllm
CPE cpe:2.3:a:mintplexlabs:anythingllm:*:*:*:*:*:*:*:*

24 Apr 2026, 19:17

Type Values Removed Values Added
References () https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-4q6m-qh3w-9gf5 - () https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-4q6m-qh3w-9gf5 -

24 Apr 2026, 04:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-04-24 04:16

Updated : 2026-04-27 14:53


NVD link : CVE-2026-41318

Mitre link : CVE-2026-41318

CVE.ORG link : CVE-2026-41318


JSON object : View

Products Affected

mintplexlabs

  • anythingllm
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-116

Improper Encoding or Escaping of Output

CWE-1336

Improper Neutralization of Special Elements Used in a Template Engine