CVE-2026-40453

Published: Apr 27, 2026 Last Modified: Apr 28, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,9
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

The fix for CVE-2025-27636 added setLowerCase(true) to HttpHeaderFilterStrategy so that case-variant header names such as 'CAmelExecCommandExecutable' are filtered out alongside 'CamelExecCommandExecutable'. The same setLowerCase(true) call was not applied to five non-HTTP HeaderFilterStrategy implementations: JmsHeaderFilterStrategy and ClassicJmsHeaderFilterStrategy in camel-jms, SjmsHeaderFilterStrategy in camel-sjms, CoAPHeaderFilterStrategy in camel-coap, and GooglePubsubHeaderFilterStrategy in camel-google-pubsub. Because those strategies use case-sensitive String.startsWith('Camel'/'camel') filtering while the Camel Exchange stores headers in a case-insensitive map, an attacker with JMS (or equivalent) producer access to the broker consumed by a Camel route can inject case-variant Camel internal headers, which are then resolved by downstream components such as camel-exec and camel-file using their canonical casing. This enables remote code execution and arbitrary file write on routes that forward JMS messages to header-driven components.

This issue affects Apache Camel: from 3.0.0 before 4.14.6, from 4.15.0 before 4.18.2, from 4.19.0 before 4.20.0.

Users are recommended to upgrade to version 4.20.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested to upgrade to 4.14.6. If users are on the 4.18.x releases stream, then they are suggested to upgrade to 4.18.2.

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
0,0019
Percentile
0,4th
Updated

EPSS Score Trend (Last 4 Days)

178

Improper Handling of Case Sensitivity

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism
Applicable Platforms
Operating Systems: Windows, macOS
View CWE Details
Application

Camel by Apache

Product Information
Vendor Apache
Product Camel
Version Range Affected
From 3.0.0 (inclusive)
To 4.14.6 (exclusive)
cpe:2.3:a:apache:camel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Camel by Apache

Product Information
Vendor Apache
Product Camel
Version Range Affected
From 4.15.0 (inclusive)
To 4.18.2 (exclusive)
cpe:2.3:a:apache:camel:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Application

Camel by Apache

Product Information
Vendor Apache
Product Camel
Version 4.19.0
cpe:2.3:a:apache:camel:4.19.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://camel.apache.org/security/CVE-2026-40453.html
https://camel.apache.org/security/CVE-2026-40453.html