> CVE-2026-61551 [HIGH]

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PUBLISHED
2026-09-18 18:17
MODIFIED
2026-09-18 18:17
CVSS_SCORE V3
8.6
EPSS (Prob. Exploit)
0.94%
Top 39.8%
DATA SOURCES:
NVD đź”— 2026-09-18 CWE MITRE đź”— 2026-10-01 FIRST EPSS đź”— 2026-10-16 OSV đź”— 2026-09-23

> DESCRIPTION

Icinga 2 is an open source monitoring system. Prior to 2.14.9, 2.15.4, and 2.16.2, parsing deeply nested JSON can exhaust the call stack because nesting depth is not bounded. The affected JSON parsing paths are reachable by unauthenticated network clients through the Icinga 2 service on TCP port 5665, allowing a remote attacker to crash the process, while possible code execution has not been demonstrated. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.

> 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:H
EXPLOITABILITY
3.9
IMPACT
4.7

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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
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
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

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

> WEAKNESSES

CWE-674

> CWE DETAILED DESCRIPTIONS

CWE-674: Uncontrolled Recursion - The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Icinga 2: Stack overflow via deeply nested JSON objects

AFFECTED PACKAGES:
Unknown / Unknown
42 versions affected
ALIASES:
GHSA-wh38-wg57-5w7g

> HISTORIQUE DES MODIFICATIONS

Première apparition
18/09/2026 18:17
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-674: Uncontrolled Recursion - The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://github.com/Icinga/icinga2/commit/391504eaa9ed9aee81f84008c57ec821974b74e...
https://github.com/Icinga/icinga2/commit/3d9166ff52ff1a64a286c39af57957d63442c13...
https://github.com/Icinga/icinga2/commit/4964d2444ca5c4fae9036054554e1c6e0025fb8...
https://github.com/Icinga/icinga2/commit/ed163a8aa9d296820dd2ad14c47bf3f6a3fcce7...
https://github.com/Icinga/icinga2/pull/10908
https://github.com/Icinga/icinga2/releases/tag/v2.14.9
https://github.com/Icinga/icinga2/releases/tag/v2.15.4
https://github.com/Icinga/icinga2/releases/tag/v2.16.2
https://github.com/Icinga/icinga2/security/advisories/GHSA-wh38-wg57-5w7g
https://icinga.com/blog/icinga2-security-release-v2-16-2
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