CVE-2026-5438

Published: Apr 09, 2026 Last Modified: Apr 15, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`. The server does not enforce limits on decompressed size and allocates memory based on attacker-controlled compression metadata. A specially crafted gzip payload can trigger excessive memory allocation and exhaust system memory.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0002
Percentile
0,0th
Updated

EPSS Score Trend (Last 7 Days)

770

Allocation of Resources Without Limits or Throttling

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
Application

Orthanc by Orthanc-Server

Product Information
Vendor Orthanc-Server
Product Orthanc
Version Range Affected
To 1.12.11 (exclusive)
cpe:2.3:a:orthanc-server:orthanc:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://kb.cert.org/vuls/id/536588
https://kb.cert.org/vuls/id/536588
https://www.machinespirits.de/
https://www.machinespirits.de/
https://www.orthanc-server.com/
https://www.orthanc-server.com/