> CVE-2023-26154 [MEDIUM]

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PUBLISHED
2023-12-06 05:15
MODIFIED
2024-11-21 07:50
CVSS_SCORE V3
5.9
EPSS (Prob. Exploit)
0.96%
Top 37.8%
DATA SOURCES:
NVD 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-15 GITHUB 🔗 2026-11-10

> DESCRIPTION

Versions of the package pubnub before 7.4.0; all versions of the package com.pubnub:pubnub; versions of the package pubnub before 6.19.0; all versions of the package github.com/pubnub/go; versions of the package github.com/pubnub/go/v7 before 7.2.0; versions of the package pubnub before 7.3.0; versions of the package pubnub/pubnub before 6.1.0; versions of the package pubnub before 5.3.0; versions of the package pubnub before 0.4.0; versions of the package pubnub/c-core before 4.5.0; versions of the package com.pubnub:pubnub-kotlin before 7.7.0; versions of the package pubnub/swift before 6.2.0; versions of the package pubnub before 5.2.0; versions of the package pubnub before 4.3.0 are vulnerable to Insufficient Entropy via the getKey function, due to inefficient implementation of the AES-256-CBC cryptographic algorithm. The provided encrypt function is less secure when hex encoding and trimming are applied, leaving half of the bits in the key always the same for every encoded message or file. **Note:** In order to exploit this vulnerability, the attacker needs to invest resources in preparing the attack and brute-force the encryption.

> AFFECTED_PRODUCTS

Pubnub - C Core
< 4.5.0
Pubnub - Kotlin
< 7.7.0
Pubnub - Pubnub
< 0.4.0
Pubnub - Pubnub
< 7.2.0
Pubnub - Pubnub
>= 3.6.4 < 4.3.0
Pubnub - Pubnub
>= 4.3.1 < 5.2.0
Pubnub - Pubnub
>= 6.0.0 < 6.1.0
Pubnub - Pubnub
>= 6.2.0 < 6.19.0
Pubnub - Pubnub
>= 7.0.0 < 7.3.0
Pubnub - Pubnub
>= 7.3.1 < 7.4.0
Pubnub - Swift
< 6.2.0

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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
High (H)
Conditions spécifiques doivent être réunies 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
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> GITHUB SECURITY ADVISORY

GHSA-5844-q3fc-56rh MODERATE

pubnub Insufficient Entropy vulnerability

AFFECTED PACKAGES:
GO / github.com/pubnub/go/v5
< 5.0.4-0.20231016150651-428517fef5b9
Fixed in: 5.0.4-0.20231016150651-428517fef5b9
GO / github.com/pubnub/go/v6
< 6.1.1-0.20231016150651-428517fef5b9
Fixed in: 6.1.1-0.20231016150651-428517fef5b9
GO / github.com/pubnub/go
< 0.0.0-20231016150651-428517fef5b9
Fixed in: 0.0.0-20231016150651-428517fef5b9
SWIFT / github.com/pubnub/swift
< 6.2.0
Fixed in: 6.2.0
PIP / pubnub
< 7.3.0
Fixed in: 7.3.0
PUB / pubnub
< 4.3.0
Fixed in: 4.3.0
COMPOSER / pubnub/pubnub
< 6.1.0
Fixed in: 6.1.0
RUST / pubnub
< 0.4.0
Fixed in: 0.4.0
RUBYGEMS / pubnub
< 5.3.0
Fixed in: 5.3.0
NUGET / Pubnub
< 6.19.0
Fixed in: 6.19.0

> HISTORIQUE DES MODIFICATIONS

Première apparition
06/12/2023 05:15
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 14:45
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 1 Dernière mise à jour: 1 year ago
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