Mintplex-Labs anything-llm up to 1.12.0 /api/workspace/ cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in Mintplex-Labs anything-llm up to 1.12.0. Impacted is an unknown function of the file /api/workspace/. Performing a manipulation results in cross site scripting. This vulnerability is known as CVE-2026-41318. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Mintplex-Labs anything-llm up to 1.12.0. This affects an unknown code of the file /api/workspace/. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-41318 since 04/20/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 1.12.1 eliminates this vulnerability. Applying the patch f5fa03f4728e483949f6360093bc3ea1ef555535 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• Mintplex-Labs

Name

• anything-llm

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12.0

License

• open-source

Website

• Product: https://github.com/Mintplex-Labs/anything-llm/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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