🛡️ CVE-2026-42456 — anythingllm

🟡 CVSS 4.3 — Medium ⚠️ Exploit Public CWE-200 NVD
4.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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, GET /api/workspace/:slug/tts/:chatId in AnythingLLM returns the text-to-speech audio for another user's chat response within the same workspace because the route validates workspace membership but does not enforce ownership of the targeted chat row. As a result, an authenticated user can access another user's private assistant response in audio form if the chatId is known or guessed. This constitutes an insecure direct object reference (IDOR) affecting private chat response content exposed through the TTS endpoint. This issue has been patched in version 1.12.1.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

Weakness class

CVE-2026-42456 is classified as CWE-200: Exposure of Sensitive Information. Information that should stay internal is disclosed to someone who is not authorised to see it.

Affected software

CVE-2026-42456 is recorded against 2 packages.

  • anythingllm (fixed in 1.12.1)
  • unknown

Timeline and source

Published on 8 May 2026 and last revised on 24 July 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com
github.com
github.com

Details

Severity MEDIUM
CVSS Score 4.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE CWE-200
Public Exploit ⚠️ Yes
Source NVD
Published 2026-05-08
Updated 2026-08-11
Modified 2026-07-24

Affected Packages

Software From version Fixed in
anythingllm — 1.12.1
unknown — —

Similar Threats

Exploit Protection

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CVE-2026-42456 carries CVSS 4.3 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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