> CVE-2026-102992 [CRITICAL]

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PUBLISHED
2026-09-30 20:17
MODIFIED
2026-09-30 20:17
CVSS_SCORE V3
9.2
EPSS (Prob. Exploit)
0.43%
Top 63.6%
DATA SOURCES:
NVD đź”— 2026-09-30 CWE MITRE đź”— 2026-10-01 FIRST EPSS đź”— 2026-10-20 GITHUB đź”— 2026-10-15 OSV đź”— 2026-10-07 MSRC đź”— 2026-10-04

> DESCRIPTION

piscina is a node.js worker pool implementation. Prior to 4.9.4, 5.3.2, and 6.0.0-rc.5, Piscina stores ThreadPool.options in src/index.ts as a plain object that inherits from Object.prototype. Applications with a separate prototype-pollution primitive can therefore supply inherited values for security-sensitive options that do not have own defaults. An inherited execArgv value is passed to the Node.js Worker constructor and can preload attacker-controlled code in worker threads, an inherited loadBalancer function can execute during task scheduling, and inherited env values can alter worker environments. This issue is fixed in versions 4.9.4, 5.3.2, and 6.0.0-rc.5.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-1321

> CWE DETAILED DESCRIPTIONS

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') - The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

> GITHUB SECURITY ADVISORY

GHSA-67c8-pqhq-4rmx CRITICAL

piscina: Prototype-pollution gadget in ThreadPool.options allows RCE via execArgv / loadBalancer / env

AFFECTED PACKAGES:
NPM / piscina
>= 6.0.0-rc.1, < 6.0.0-rc.5
Fixed in: 6.0.0-rc.5
NPM / piscina
< 4.9.4
Fixed in: 4.9.4
NPM / piscina
>= 5.0.0, < 5.3.2
Fixed in: 5.3.2

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

piscina: Prototype-pollution gadget in ThreadPool.options allows RCE via execArgv / loadBalancer / env

AFFECTED PACKAGES:
Unknown / Unknown
53 versions affected
ALIASES:
GHSA-67c8-pqhq-4rmx

> HISTORIQUE DES MODIFICATIONS

Première apparition
30/09/2026 20:17
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') - The product receives input from an upstream component that specifies attributes that are to be ini...
Total des modifications: 1 Dernière mise à jour: 2 weeks ago

> REFERENCES

https://github.com/piscinajs/piscina/commit/0cb12fca37f526065b072592afe954574dcc...
https://github.com/piscinajs/piscina/commit/2f69f67159a0e48b38fd61fa4a91c2fdc19f...
https://github.com/piscinajs/piscina/commit/5be7bbb19e3787bb698862cd516121a578d6...
https://github.com/piscinajs/piscina/commit/bebbda255c2981cecddd36b171b94be2fd41...
https://github.com/piscinajs/piscina/releases/tag/v4.9.4
https://github.com/piscinajs/piscina/releases/tag/v5.3.2
https://github.com/piscinajs/piscina/releases/tag/v6.0.0-rc.5
https://github.com/piscinajs/piscina/security/advisories/GHSA-67c8-pqhq-4rmx
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