> CVE-2026-54737 [HIGH]

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PUBLISHED
2026-07-31 18:17
MODIFIED
2026-07-31 18:17
CVSS_SCORE V3
7.3
EPSS (Prob. Exploit)
0.46%
Top 61.5%
DATA SOURCES:
NVD 🔗 2026-07-31 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-10-29 OSV 🔗 2026-11-02

> DESCRIPTION

@phun-ky/defaults-deep is a library like lodash defaultsDeep with array preservation and no lodash dependency. Prior to 2.0.5, defaultsDeep() recursively merges user-supplied objects without filtering proto, constructor, and prototype, allowing properties to be written to Object.prototype. This issue is fixed in version 2.0.5.

> AFFECTED_PRODUCTS

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

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EXPLOITABILITY
3.9
IMPACT
3.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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
Low (L)
Peu de conditions requises 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
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
Low (L)
Interruption partielle du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
Low
Interruption partielle du service possible

> WEAKNESSES

CWE-1321

> CWE DETAILED DESCRIPTIONS

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes - 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-mj3g-7xcc-x4vh HIGH

@phun-ky/defaults-deep Has a Prototype Pollution issue via Unsafe Recursive Property Merging

AFFECTED PACKAGES:
NPM / @phun-ky/defaults-deep
< 2.0.5
Fixed in: 2.0.5

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

@phun-ky/defaults-deep Has a Prototype Pollution issue via Unsafe Recursive Property Merging

AFFECTED PACKAGES:
Unknown / Unknown
25 versions affected
ALIASES:
GHSA-mj3g-7xcc-x4vh

> HISTORIQUE DES MODIFICATIONS

Première apparition
31/07/2026 18:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne 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...
Nouvelle valeur:
CWE-1321: Improperly Controlled Modification of Object Prototype Attributes - The product receives input from an upstream component that specifies attributes that are to be initialized or updated in a...
📊 ENRICHISSEMENT 01/08/2026 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: 2 Dernière mise à jour: 3 days ago

> REFERENCES

https://github.com/phun-ky/defaults-deep/commit/807dba930f8718f9126cad59d949b8fd...
https://github.com/phun-ky/defaults-deep/pull/49
https://github.com/phun-ky/defaults-deep/releases/tag/2.0.5
https://github.com/phun-ky/defaults-deep/security/advisories/GHSA-mj3g-7xcc-x4vh
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