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TI-2026-23234 Aliases CVE-2026-29091GHSA-fp25-p6mj-qqg6

Locutus: Remote Code Execution (RCE) in locutus call_user_func_array due to Code Injection

Priority HIGH 70CWE-95Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-95.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00891 59th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial locutus (locutusjs): 3.0.0locutus (npm): 3.0.0Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
locutusjslocutusbefore 3.0.03.0.0Patch availableCNA
—locutus (npm)before 3.0.03.0.0Patch availableGHSA-fp25-p6mj-qqg6
  • locutus Vendorlocutusjs Affected before 3.0.0 Fixed in 3.0.0 Patch available CNA
  • locutus (npm) Vendor— Affected before 3.0.0 Fixed in 3.0.0 Patch available GHSA-fp25-p6mj-qqg6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:locutus:locutus:*:*:*:*:*:node.js:*:*before 3.0.0Vulnerablelocutusjs
  • cpe:2.3:a:locutus:locutus:*:*:*:*:*:node.js:*:* Versions before 3.0.0 Vulnerable ·locutusjs

Remediation

  • Fix · CNA locutus (locutusjs) Fixed in 3.0.0
  • Fix · GHSA-fp25-p6mj-qqg6 locutus (npm) Fixed in 3.0.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Logging Subsystem for Red Hat OpenShiftAffectedNo fix planned: Will not fix

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-29091
  2. 2026-10-03 Alias added: GHSA-fp25-p6mj-qqg6

References

Exploit 1

Patch 1

Advisory 1

Other 3

  • TI-2026-24833 Locutus: RCE via unsanitized input in create_function() CVSS 3.1CRITICAL 9.8
  • TI-2026-26333 Locutus has Prototype Pollution via __proto__ Key Injection in unserialize() CVSS 4.0MEDIUM 6.9
  • TI-2026-26334 Locutus Prototype Pollution due to incomplete fix for CVE-2026-25521 CVSS 4.0MEDIUM 6.3
  • TI-2020-06239 Prototype pollution in locutus CVSS 3.1CRITICAL 9.8
  • TI-2026-20630 Locutus is vulnerable to Prototype Pollution CVSS 4.0CRITICAL 9.4
  • TI-2021-06085 Regular expression denial of service (ReDoS) in locutus CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences