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Vulnerabilities

Vulnerability · CVE-2026-29091

Locutus brings stdlibs of other programming languages to JavaScript for educational purposes.

Published Mar 6, 2026 · catalog updated Jul 15, 2026 · Locutus brings stdlibs of

Check if you run it

No confirmed exploitation is on record for CVE-2026-29091. EPSS is 1.02%. Act only if a listed version of Locutus brings stdlibs of is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Locutus brings stdlibs of).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.02%
Remediation
Advisory link
Affected products
cpe locutus/locutus

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe locutus/locutusversion unspecified

How to fix CVE-2026-29091

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-29091. EPSS is 1.02%. Act only if a listed version of Locutus brings stdlibs of is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-94: Code Injection; CWE-95. EPSS 1.02%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 6, 2026 · NIST NVD

    Detected

    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

  2. Jul 15, 2026 · NIST NVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-29091

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-29091

    30-day exploitation probability 1.0%

    first.org
  • NIST NVDVulnerability recordCVE-2026-29091

    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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.