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CVE-2026-29091— Locutus: Remote Code Execution (RCE) in locutus call_user_func_array due to Code Injection

Quick assessment

Affected
locutusjs locutus
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Locutus是Locutus开源的一个JavaScript代码库。 Locutus 3.0.0之前版本存在安全漏洞，该漏洞源于call_user_func_array函数实现不安全，可能导致远程代码执行。

CVSS 8.1 · High EPSS 1.02% · P62

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript

Affected Version Matrix 1

VendorProduct Version RangeStatus
locutusjs locutus < 3.0.0 affected
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I. Basic Information for CVE-2026-29091

Vulnerability Information
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Vulnerability Title
Locutus: Remote Code Execution (RCE) in locutus call_user_func_array due to Code Injection
Source: CVE Program / CVE List V5
Vulnerability Description
Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Prior to version 3.0.0, a remote code execution (RCE) flaw was discovered in the locutus project, specifically within the call_user_func_array function implementation. The vulnerability allows an attacker to inject arbitrary JavaScript code into the application's runtime environment. This issue stems from an insecure implementation of the call_user_func_array function (and its wrapper call_user_func), which fails to properly validate all components of a callback array before passing them to eval(). This issue has been patched in version 3.0.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Locutus 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Locutus是Locutus开源的一个JavaScript代码库。 Locutus 3.0.0之前版本存在安全漏洞，该漏洞源于call_user_func_array函数实现不安全，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
locutusjs locutus < 3.0.0 -

II. Public POCs for CVE-2026-29091

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 9426 chars
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III. Intelligence Information for CVE-2026-29091

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Patches & Fixes for CVE-2026-29091 (1)

Vendor Advisories for CVE-2026-29091 (1)

IV. Related Vulnerabilities

Same product: locutus
Same vendor: locutusjs
Same weakness: CWE-95

V. Comments for CVE-2026-29091

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