> CVE-2026-34368 [MEDIUM]

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PUBLISHED
2026-03-27 18:16
MODIFIED
2026-03-27 18:16
CVSS_SCORE V3
5.3
EPSS (Prob. Exploit)
0.26%
Top 83.4%
DATA SOURCES:
NVD 🔗 2026-03-27 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-10-28

> DESCRIPTION

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `transferBalance()` method in `plugin/YPTWallet/YPTWallet.php` contains a Time-of-Check-Time-of-Use (TOCTOU) race condition. The method reads the sender's wallet balance, checks sufficiency in PHP, then writes the new balance — all without database transactions or row-level locking. An attacker with multiple authenticated sessions can send concurrent transfer requests that all read the same stale balance, each passing the balance check independently, resulting in only one deduction being applied while the recipient is credited multiple times. Commit 34132ad5159784bfc7ba0d7634bb5c79b769202d contains a fix.

> 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:H/PR:L/UI:N/S:U/C:N/I:H/A:N
EXPLOITABILITY
1.6
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/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
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
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-362

> CWE DETAILED DESCRIPTIONS

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization - The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

> GITHUB SECURITY ADVISORY

GHSA-h54m-c522-h6qr MODERATE

AVideo Vulnerable to Wallet Balance Double-Spend via TOCTOU Race Condition in transferBalance

AFFECTED PACKAGES:
COMPOSER / wwbn/avideo
<= 26.0

> HISTORIQUE DES MODIFICATIONS

Première apparition
27/03/2026 18:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') - The product contains a concurrent code sequence that requires temporary, exclusive access to a sh...
Nouvelle valeur:
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization - The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but ...
📊 ENRICHISSEMENT 01/04/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') - The product contains a concurrent code sequence that requires temporary, exclusive access to a sh...
Total des modifications: 2 Dernière mise à jour: 1 week ago

> REFERENCES

https://github.com/WWBN/AVideo/commit/34132ad5159784bfc7ba0d7634bb5c79b769202d
https://github.com/WWBN/AVideo/security/advisories/GHSA-h54m-c522-h6qr
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