> CVE-2026-43898 [CRITICAL]

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PUBLISHED
2026-05-28 18:16
MODIFIED
2026-05-28 18:38
CVSS_SCORE V3
10.0
EPSS (Prob. Exploit)
0.47%
Top 59.1%
DATA SOURCES:
NVD 🔗 2026-05-28 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01 GITHUB 🔗 2026-11-05 OSV 🔗 2026-11-02

> DESCRIPTION

SandboxJS is a JavaScript sandboxing library. Prior to 0.9.6, sandbox-defined functions expose Function.caller, allowing sandboxed code to recover the internal LispType.Call runtime callback. That callback can then be invoked with attacker-controlled fake context and obj values to extract blocked host statics, recover the real host Function constructor, and execute arbitrary host JavaScript. This vulnerability is fixed in 0.9.6.

> 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:C/C:H/I:H/A:H
EXPLOITABILITY
3.9
IMPACT
6.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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
Changed (C)
Impact s'étend au-delà 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-94

> CWE DETAILED DESCRIPTIONS

CWE-94: Improper Control of Generation of Code - The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

> GITHUB SECURITY ADVISORY

GHSA-g8f2-4f4f-5jqw CRITICAL

SandboxJS has a sandbox escape via Function.caller leakage of internal call op

AFFECTED PACKAGES:
NPM / @nyariv/sandboxjs
<= 0.9.5
Fixed in: 0.9.6

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

SandboxJS: Sandbox escape via Function.caller leakage of internal call op

AFFECTED PACKAGES:
Unknown / Unknown
45 versions affected
ALIASES:
GHSA-g8f2-4f4f-5jqw

> HISTORIQUE DES MODIFICATIONS

Première apparition
28/05/2026 18:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-94: Improper Control of Generation of Code ('Code Injection') - The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not n...
Nouvelle valeur:
CWE-94: Improper Control of Generation of Code - The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorr...
📊 ENRICHISSEMENT 01/06/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-94: Improper Control of Generation of Code ('Code Injection') - The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not n...
Total des modifications: 2 Dernière mise à jour: 6 days ago

> REFERENCES

https://github.com/nyariv/SandboxJS/commit/826865251232611ec94078bab5a18ec875dad...
https://github.com/nyariv/SandboxJS/security/advisories/GHSA-g8f2-4f4f-5jqw
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