> CVE-2026-65591 [HIGH]

« BACK_TO_HOME
PUBLISHED
2026-07-22 12:18
MODIFIED
2026-07-22 12:18
CVSS_SCORE V3
8.9
EPSS (Prob. Exploit)
0.69%
Top 47.5%
DATA SOURCES:
NVD 🔗 2026-07-22 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-10-29 OSV 🔗 2026-07-29

> DESCRIPTION

n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.

> 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:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L/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:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L/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
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
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-917

> CWE DETAILED DESCRIPTIONS

CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement - The product constructs all or part of an expression language (EL) statement in a framework such as a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed.

> GITHUB SECURITY ADVISORY

GHSA-pm35-fqvh-cq5g HIGH

n8n: Legacy Expression Evaluator Sanitizer Bypass Leads to Authenticated Code Execution

AFFECTED PACKAGES:
NPM / n8n
>= 2.0.0-rc.0, < 2.29.8
Fixed in: 2.29.8
NPM / n8n
>= 2.30.0, < 2.30.1
Fixed in: 2.30.1
NPM / n8n
< 1.123.64
Fixed in: 1.123.64

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

n8n before 1.123.64 Sanitizer Bypass Remote Code Execution

AFFECTED PACKAGES:
Unknown / Unknown
1331 versions affected
ALIASES:
GHSA-pm35-fqvh-cq5g

> HISTORIQUE DES MODIFICATIONS

Première apparition
22/07/2026 12:18
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') - The product constructs all or part of an expression language (EL) stat...
Nouvelle valeur:
CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement - The product constructs all or part of an expression language (EL) statement in a framework such as a Jav...
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection') - The product constructs all or part of an expression language (EL) stat...
Total des modifications: 2 Dernière mise à jour: 5 days ago

> REFERENCES

https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g
https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-exe...
« BACK_TO_HOME