CVE-2026-54771Public exploitNetwork attack vector

Unauthorized tool invocation via unverified message origin

Published Jul 9, 2026 · Updated Jul 10, 2026

Improper message validation in Langroid 0.65.6 and earlier allows remote authenticated users to invoke enabled tools through raw JSON. The agent_response, handle_message, and get_tool_messages dispatch chain parses user-supplied tool objects without enforcing message-origin or taint checks. Reachability requires an application to expose untrusted chat input and register a tool with handling enabled; consequences depend on the tool and include file access, database queries, or internal orchestration.

CVSS severity8.1
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper message validation in Langroid 0.65.6 and earlier allows remote authenticated users to invoke enabled tools through raw JSON. The agent_response, handle_message, and get_tool_messages dispatch chain parses user-supplied tool objects without enforcing message-origin or taint checks. Reachability requires an application to expose untrusted chat input and register a tool with handling enabled; consequences depend on the tool and include file access, database queries, or internal orchestration.

The record

CVE
CVE-2026-54771
Published
Jul 9, 2026
Updated
Jul 10, 2026
Vendor
Langroid
Product
Langroid
Classifications
CWE-75, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.65.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Langroid · Langroidversion=< 0.65.3

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-75Failure to Sanitize Special Elements into a Different Plane (Special Element Injection)
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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