> CVE-2026-50027 [CRITICAL]

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PUBLISHED
2026-08-14 19:17
MODIFIED
2026-08-14 19:17
CVSS_SCORE V3
9.8
EPSS (Prob. Exploit)
0.96%
Top 38.5%
DATA SOURCES:
NVD đź”— 2026-08-14 CWE MITRE đź”— 2026-11-01 FIRST EPSS đź”— 2026-11-01 GITHUB đź”— 2026-10-29

> DESCRIPTION

mcp-memory-service is a semantic memory layer for AI applications. Prior to 10.67.1, all HTTP routes under /api/documents/* in mcp-memory-service are served without any authentication dependency, even when the server is configured with an API key (MCP_API_KEY) or OAuth. An unauthenticated remote attacker can upload arbitrary content into the memory store (write), retrieve stored document content (read), and permanently delete memories belonging to authenticated users (delete) — all without supplying any credentials. The /api/memories counterpart correctly enforces authentication, making this an inconsistent and exploitable authentication boundary. This vulnerability is fixed in 10.67.1.

> 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:H/I:H/A:H
EXPLOITABILITY
3.9
IMPACT
5.9

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/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
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
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-306

> CWE DETAILED DESCRIPTIONS

CWE-306: Missing Authentication for Critical Functionality - The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

> GITHUB SECURITY ADVISORY

GHSA-84hp-mqvj-3p8h CRITICAL

mcp-memory-service: Missing Authentication on Document API Endpoints Allows Unauthenticated Memory Read/Write/Delete

AFFECTED PACKAGES:
PIP / mcp-memory-service
< 10.67.1
Fixed in: 10.67.1

> HISTORIQUE DES MODIFICATIONS

Première apparition
14/08/2026 19:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-306: Missing Authentication for Critical Function - The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of res...
Nouvelle valeur:
CWE-306: Missing Authentication for Critical Functionality - The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount o...
📊 ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-306: Missing Authentication for Critical Function - The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of res...
Total des modifications: 2 Dernière mise à jour: 1 hour ago

> REFERENCES

https://github.com/advisories/GHSA-84hp-mqvj-3p8h
https://pypi.org/project/mcp-memory-service
https://web.archive.org/web/20260508112116/https://github.com/doobidoo/mcp-memor...
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