CVE•Published 2026-03-06•Modified 2026-06-30•1 article on news•7 live references•NVD data

CVE-2026-29091Locutus · Locutus

Vulnerability data via NVD (ingested)

CVSS v3.1

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

—

Weaknesses (CWE)

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')CWE-94Improper Control of Generation of Code ('Code Injection')

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.

Timeline

Published 2026-03-06

Modified 2026-06-30

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-29091

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Locutus Locutus"

All exposed Locutus Locutus instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Locutus"

HTTP body or banner mentions "Locutus" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-29091