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8 vulnerabilities by locutus
CVE-2026-33994 (GCVE-0-2026-33994)
Vulnerability from cvelistv5 – Published: 2026-03-27 22:15 – Updated: 2026-04-01 13:45
VLAI
Title
Locutus Prototype Pollution due to incomplete fix for CVE-2026-25521
Summary
Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Starting in version 2.0.39 and prior to version 3.0.25, a prototype pollution vulnerability exists in the `parse_str` function of the npm package locutus. An attacker can pollute `Object.prototype` by overriding `RegExp.prototype.test` and then passing a crafted query string to `parse_str`, bypassing the prototype pollution guard. This vulnerability stems from an incomplete fix for CVE-2026-25521. The CVE-2026-25521 patch replaced the `String.prototype.includes()`-based guard with a `RegExp.prototype.test()`-based guard. However, `RegExp.prototype.test` is itself a writable prototype method that can be overridden, making the new guard bypassable in the same way as the original — trading one hijackable built-in for another. Version 3.0.25 contains an updated fix.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/locutusjs/locutus/security/adv… | x_refsource_CONFIRM |
| https://github.com/locutusjs/locutus/pull/597 | x_refsource_MISC |
| https://github.com/locutusjs/locutus/commit/345a6… | x_refsource_MISC |
| https://github.com/locutusjs/locutus/releases/tag… | x_refsource_MISC |
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CVE-2026-33993 (GCVE-0-2026-33993)
Vulnerability from cvelistv5 – Published: 2026-03-27 22:14 – Updated: 2026-03-30 15:45
VLAI
Title
Locutus has Prototype Pollution via __proto__ Key Injection in unserialize()
Summary
Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Prior to version 3.0.25, the `unserialize()` function in `locutus/php/var/unserialize` assigns deserialized keys to plain objects via bracket notation without filtering the `__proto__` key. When a PHP serialized payload contains `__proto__` as an array or object key, JavaScript's `__proto__` setter is invoked, replacing the deserialized object's prototype with attacker-controlled content. This enables property injection, for...in propagation of injected properties, and denial of service via built-in method override. This is distinct from the previously reported prototype pollution in `parse_str` (GHSA-f98m-q3hr-p5wq, GHSA-rxrv-835q-v5mh) — `unserialize` is a different function with no mitigation applied. Version 3.0.25 patches the issue.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/locutusjs/locutus/security/adv… | x_refsource_CONFIRM |
| https://github.com/locutusjs/locutus/pull/597 | x_refsource_MISC |
| https://github.com/locutusjs/locutus/commit/345a6… | x_refsource_MISC |
| https://github.com/locutusjs/locutus/releases/tag… | x_refsource_MISC |
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CVE-2026-32304 (GCVE-0-2026-32304)
Vulnerability from cvelistv5 – Published: 2026-03-12 21:24 – Updated: 2026-03-13 13:12
VLAI
Title
Locutus: RCE via unsanitized input in create_function()
Summary
Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. Prior to 3.0.14, the create_function(args, code) function passes both parameters directly to the Function constructor without any sanitization, allowing arbitrary code execution. This is distinct from CVE-2026-29091 which was call_user_func_array using eval() in v2.x. This finding affects create_function using new Function() in v3.x. This vulnerability is fixed in 3.0.14.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/locutusjs/locutus/security/adv… | x_refsource_CONFIRM |
| https://github.com/locutusjs/locutus/releases/tag… | x_refsource_MISC |
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CVE-2026-29091 (GCVE-0-2026-29091)
Vulnerability from cvelistv5 – Published: 2026-03-06 17:48 – Updated: 2026-03-06 18:34
VLAI
Title
Locutus: Remote Code Execution (RCE) in locutus call_user_func_array due to Code Injection
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.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/locutusjs/locutus/security/adv… | x_refsource_CONFIRM |
| https://github.com/locutusjs/locutus/commit/977a1… | x_refsource_MISC |
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CVE-2026-25521 (GCVE-0-2026-25521)
Vulnerability from cvelistv5 – Published: 2026-02-04 21:20 – Updated: 2026-02-05 14:31
VLAI
Title
Locutus is vulnerable to Prototype Pollution
Summary
Locutus brings stdlibs of other programming languages to JavaScript for educational purposes. In versions from 2.0.12 to before 2.0.39, a prototype pollution vulnerability exists in locutus. Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using String.prototype. This issue has been patched in version 2.0.39.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/locutusjs/locutus/security/adv… | x_refsource_CONFIRM |
| https://github.com/locutusjs/locutus/commit/042af… | x_refsource_MISC |
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CVE-2021-23392 (GCVE-0-2021-23392)
Vulnerability from cvelistv5 – Published: 2021-06-08 07:45 – Updated: 2024-09-16 17:08
VLAI
Title
Regular Expression Denial of Service (ReDoS)
Summary
The package locutus before 2.0.15 are vulnerable to Regular Expression Denial of Service (ReDoS) via the gopher_parsedir function.
Severity
5.3 (Medium)
CWE
- Regular Expression Denial of Service (ReDoS)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://snyk.io/vuln/SNYK-JS-LOCUTUS-1090597 | x_refsource_MISC |
| https://github.com/locutusjs/locutus/pull/446 | x_refsource_MISC |
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Impacted products
Date Public
2021-06-08 00:00
Credits
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CVE-2020-7719 (GCVE-0-2020-7719)
Vulnerability from cvelistv5 – Published: 2020-09-01 09:30 – Updated: 2024-09-17 01:26
VLAI
Title
Prototype Pollution
Summary
Versions of package locutus before 2.0.12 are vulnerable to prototype Pollution via the php.strings.parse_str function.
Severity
9.8 (Critical)
CWE
- Prototype Pollution
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://snyk.io/vuln/SNYK-JS-LOCUTUS-598675 | x_refsource_MISC |
| https://github.com/kvz/locutus/pull/418/ | x_refsource_CONFIRM |
Date Public
2020-09-01 00:00
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CVE-2020-13619 (GCVE-0-2020-13619)
Vulnerability from cvelistv5 – Published: 2020-07-01 16:54 – Updated: 2024-08-04 12:25
VLAI
Summary
php/exec/escapeshellarg in Locutus PHP through 2.0.11 allows an attacker to achieve code execution.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.npmjs.com/package/locutus | x_refsource_MISC |
| https://locutus.io/php/ | x_refsource_MISC |
| https://reallinkers.github.io/CVE-2020-13619/ | x_refsource_MISC |
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"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2020-13619",
"datePublished": "2020-07-01T16:54:07.000Z",
"dateReserved": "2020-05-26T00:00:00.000Z",
"dateUpdated": "2024-08-04T12:25:16.402Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}