> CVE-2026-35521 [HIGH]

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PUBLISHED
2026-04-07 16:16
MODIFIED
2026-04-07 16:16
CVSS_SCORE V3
8.8
EPSS (Prob. Exploit)
1.04%
Top 36.3%
DATA SOURCES:
NVD 🔗 2026-04-07 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 OSV 🔗 2026-09-20

> DESCRIPTION

FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the DHCP hosts configuration parameter (dhcp.hosts). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6.

> 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:L/UI:N/S:U/C:H/I:H/A:H
EXPLOITABILITY
2.8
IMPACT
5.9

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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
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-78 CWE-93

> CWE DETAILED DESCRIPTIONS

CWE-78: Improper Neutralization of Special Elements used in an OS Command - The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component. | CWE-93: Improper Neutralization of CRLF Sequences - The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Pi-hole FTL affected by Remote Code Execution (RCE) via dhcp.hosts Newline Injection

AFFECTED PACKAGES:
Unknown / Unknown
16 versions affected
ALIASES:
GHSA-vfmq-jrx3-wv3c

> HISTORIQUE DES MODIFICATIONS

Première apparition
07/04/2026 16:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') - The product constructs all or part of an OS command using externally-influenced input from an upstr...
Nouvelle valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command - The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it doe...
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') - The product constructs all or part of an OS command using externally-influenced input from an upstr...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

https://github.com/pi-hole/FTL/security/advisories/GHSA-vfmq-jrx3-wv3c
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