CVE-2026-79483: FastGPT Community Edition NoSQL injection in chat history endpoint

CVE-2026-79483 · Severity: medium · CVSS 5.3 · Published 2026-08-31

FastGPT Community Edition is an AI platform that stores and retrieves chat conversations. Versions 4.10.0 through 4.14.0 contain a NoSQL injection flaw in the chat history retrieval endpoint that allows unauthenticated attackers to bypass security checks and view the chat history titles of all users on the platform, potentially exposing sensitive conversation topics and personal information.

Vendors: Fastgpt.

Quick answers

Is CVE-2026-79483 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-79483 being exploited in the wild.
How severe is CVE-2026-79483?
Medium severity, with a CVSS score of 5.3, published 31 August 2026.
Which products and versions are affected?
FastGPT Community Edition 4.10.0 through 4.14.0.
Is there a fix for CVE-2026-79483?
A patch was published on 2026-08-31: Patch available in version 4.15.0 and later Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-79483 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-79483?
Check whether you run FastGPT Community Edition 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

The vulnerability is a NoSQL injection (CWE-943) in the POST /api/core/chat/getHistories endpoint caused by improper input validation in the authOutLinkInit() function. An unauthenticated attacker can inject NoSQL operators such as $ne, $regex, and $gt via crafted JSON payloads to bypass the outLink permission check. This allows unauthorized access to chat history titles across all users. The vulnerability affects versions 4.10.0 through 4.14.0; a patch is available in version 4.15.0 and later.

Affected products

  • FastGPT FastGPT Community Edition 4.10.0 through 4.14.0

Timeline

  • 2026-08-31: disclosed
  • 2026-08-31: patched: Patch available in version 4.15.0 and later

References

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