CVE-2026-54771

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

HIGH
8.1
CVSS Score
Published: July 9, 2026 at 11:52 PM UTC
Updated: July 10, 2026 at 04:01 PM UTC
1 product affected across 1 vendorLangroid

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Severity
HIGH8.1
Exploit prediction
EPSS 0.4%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.65.3
Affected range stops below 0.65.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-75

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