> CVE-2026-55497 [MEDIUM]

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PUBLISHED
2026-07-31 04:17
MODIFIED
2026-07-31 04:17
CVSS_SCORE V3
6.5
EPSS (Prob. Exploit)
0.53%
Top 55.1%
DATA SOURCES:
NVD 🔗 2026-07-31 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01 GITHUB 🔗 2026-10-29 OSV 🔗 2026-11-02

> DESCRIPTION

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, the built-in thumbnail and avatar image decoders limit compressed file size but do not limit decoded pixel dimensions, allowing an authenticated user to submit a small PNG, JPEG, or GIF that triggers an unbounded allocation and terminates the Cloudreve process through fatal out-of-memory behavior. This issue is fixed in version 4.17.0.

> 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:L/UI:N/S:U/C:N/I:N/A:H
EXPLOITABILITY
2.8
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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
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
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-400 CWE-409 CWE-770

> CWE DETAILED DESCRIPTIONS

CWE-400: Uncontrolled Resource Consumption - The product does not properly control the allocation and maintenance of a limited resource. | CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) - The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. | CWE-770: Allocation of Resources Without Limits or Throttling - The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

> GITHUB SECURITY ADVISORY

GHSA-g9j2-8w95-3vwv MODERATE

Cloudreve: Denial of Service - Image decompression / pixel bomb in thumbnail & avatar decoding crashes the server

AFFECTED PACKAGES:
GO / github.com/cloudreve/Cloudreve/v3
<= 3.0.0-20250225100611-da4e44b77af4
GO / github.com/cloudreve/Cloudreve/v4
< 4.0.0-20260613024411-3607f79bb44c
Fixed in: 4.0.0-20260613024411-3607f79bb44c

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Cloudreve: Server crash through image decompression/pixel bomb in thumbnail & avatar decoding (DoS)

AFFECTED PACKAGES:
Unknown / Unknown
72 versions affected
ALIASES:
GHSA-g9j2-8w95-3vwv, GO-2026-6100

> HISTORIQUE DES MODIFICATIONS

Première apparition
31/07/2026 04:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-400: Uncontrolled Resource Consumption - The product does not properly control the allocation and maintenance of a limited resource. | CWE-409: Improper Handling of Highly Compressed Data (Data Am...
Nouvelle valeur:
CWE-400: Uncontrolled Resource Consumption - The product does not properly control the allocation and maintenance of a limited resource. | CWE-409: Improper Handling of Highly Compressed Data (Data Am...
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-400: Uncontrolled Resource Consumption - The product does not properly control the allocation and maintenance of a limited resource. | CWE-409: Improper Handling of Highly Compressed Data (Data Am...
Total des modifications: 2 Dernière mise à jour: 3 days ago

> REFERENCES

https://github.com/cloudreve/cloudreve/commit/3607f79bb44c35d0be4fa8b6e24c0502b5...
https://github.com/cloudreve/cloudreve/releases/tag/4.17.0
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-g9j2-8w95-3vwv
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