> CVE-2026-43930 [LOW]

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PUBLISHED
2026-05-12 14:17
MODIFIED
2026-05-12 14:17
CVSS_SCORE V3
2.1
EPSS (Prob. Exploit)
0.30%
Top 78.6%
DATA SOURCES:
NVD 🔗 2026-05-12 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-10-29

> DESCRIPTION

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.76 and 9.9.0-alpha.2, a race condition in the MFA SMS one-time password (OTP) login path allows two concurrent /login requests carrying the same OTP to both succeed and both receive valid session tokens, breaking the single-use property of the OTP. The vulnerability requires the attacker to already possess the victim's password and intercept the active SMS OTP (e.g. via SIM swap, network mirror, or phishing relay) and to race the legitimate login request, so the practical attack surface is narrow. This vulnerability is fixed in 8.6.76 and 9.9.0-alpha.2.

> 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:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/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:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/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
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
High (H)
Authentifié avec privilèges administratifs
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
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
Low
Modification limitée 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-jpq4-7fmq-q5fj LOW

parse-server: MFA SMS one-time password accepted twice under concurrent login

AFFECTED PACKAGES:
NPM / parse-server
< 8.6.76
Fixed in: 8.6.76
NPM / parse-server
>= 9.0.0, < 9.9.0-alpha.2
Fixed in: 9.9.0-alpha.2

> HISTORIQUE DES MODIFICATIONS

Première apparition
12/05/2026 14:17
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 01/06/2026 06:01
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: 6 days ago

> REFERENCES

https://github.com/parse-community/parse-server/pull/10448
https://github.com/parse-community/parse-server/pull/10449
https://github.com/parse-community/parse-server/security/advisories/GHSA-jpq4-7f...
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