CVE-2026-54771: Langroid: handle_message() executes user-supplied tool JSON without sender verification

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-10 · updated 2026-07-10
Weakness: CWE-75

Description

Langroid is a framework for building large-language-model-powered applications. Prior to version 0.65.3, a Langroid application exposing a chat interface to untrusted users may allow direct tool invocation via raw JSON payloads, even when tools are registered with `use=False, handle=True`. Version 0.65.3 fixes the issue.

Affected products

langroid: before 0.65.3

References

https://github.com/langroid/langroid/security/advisories/GHSA-gjgq-w2m6-wr5q
https://github.com/langroid/langroid/security/advisories/GHSA-gjgq-w2m6-wr5q

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