High severity · published Jul 9, 2026
CVE-2026-54771
Langroid: handle_message() executes user-supplied tool JSON without sender verification
8.1
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LA
langroid · langroid
< 0.65.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54771
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54771
github.com
https://github.com/langroid/langroid/security/advisories/GHSA-gjgq-w2m6-wr5q
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