# CVE-2026-42456: Mintplex Labs AnythingLLM IDOR in text-to-speech endpoint

Source: https://junglewise.ai/threats/cve-2026-42456-mintplex-labs-anythingllm-idor-in-text-to-speech-endpoint  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-08. Updated: 2026-05-18  
License: CC BY 4.0 with a link back

CVE-2026-42456 · Severity: medium · CVSS 4.3 · Published 2026-05-08

AnythingLLM is an application that allows users to interact with AI models using their own documents and data. A security flaw in the text-to-speech (TTS) feature allows an authorized user in a shared workspace to listen to the private AI chat responses of other users. This could lead to the exposure of sensitive business information or private conversations if an attacker guesses or obtains a specific chat ID.

Technologies: [Mintplexlabs Anythingllm](https://junglewise.ai/threats/technologies/anythingllm). Vendors: [Mintplexlabs](https://junglewise.ai/threats/vendors/mintplexlabs).

## Quick answers

**Is CVE-2026-42456 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42456 being exploited in the wild.

**How severe is CVE-2026-42456?** Medium severity, with a CVSS score of 4.3, published 8 May 2026.

**Which products and versions are affected?** Mintplex Labs AnythingLLM Desktop <= 1.11.1; Mintplex Labs AnythingLLM Docker <= 1.11.1.

**Is there a fix for CVE-2026-42456?** A patch was published on 2026-04-22: Fix committed and version 1.12.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-42456 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-42456?** Check whether you run Mintplex Labs AnythingLLM Desktop, Mintplex Labs AnythingLLM Docker or Mintplexlabs Anythingllm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An Insecure Direct Object Reference (IDOR) exists in the `GET /api/workspace/:slug/tts/:chatId` endpoint. While the application correctly verifies that the requesting user is a member of the specified workspace, it fails to verify that the `chatId` belongs to the authenticated user. By providing a known or guessed `chatId` belonging to another user, an attacker can retrieve the generated text-to-speech audio of that user's private assistant response. The root cause is located in `server/endpoints/workspaces.js`, where the database query for the chat record did not include a `user_id` constraint. This has been patched in version 1.12.1 by enforcing ownership checks during the lookup.

## Affected products

- Mintplex Labs AnythingLLM Desktop <= 1.11.1
- Mintplex Labs AnythingLLM Docker <= 1.11.1

## Timeline

- 2026-04-22: advisory: GitHub Security Advisory GHSA-jwqg-jfg3-x5vv published
- 2026-04-22: patched: Fix committed and version 1.12.1 released
- 2026-05-08: disclosed: CVE-2026-42456 published to NVD

## References

- [https://github.com/Mintplex-Labs/anything-llm/commit/4f3f77119d342e5489d1ba7533ad6d51bdcd565f](https://github.com/Mintplex-Labs/anything-llm/commit/4f3f77119d342e5489d1ba7533ad6d51bdcd565f)
- [https://github.com/Mintplex-Labs/anything-llm/releases/tag/v1.12.1](https://github.com/Mintplex-Labs/anything-llm/releases/tag/v1.12.1)
- [https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-jwqg-jfg3-x5vv](https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-jwqg-jfg3-x5vv)

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