Apache Camel JMS, Apache Camel CoAP, Apache Camel Google PubSub: Incomplete fix for CVE-2025-27636 in non-HTTP HeaderFilterStrategies (camel-jms, camel-sjms, camel-coap, camel-google-pubsub) allows case-variant header injection

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Summary

CVECVE-2026-40453
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-27 09:16:01 UTC
Updated2026-04-28 19:43:55 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 9.9 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.000580000 probability, percentile 0.179010000 (date 2026-04-27)

Problem Types: CWE-178 | CWE-178 CWE-178 Improper Handling of Case Sensitivity

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apache Camel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Camel JMS affected 3.0.0 4.14.6 semver Not specified
CNA Apache Software Foundation Apache Camel JMS affected 4.15.0 4.18.2 semver Not specified
CNA Apache Software Foundation Apache Camel JMS affected 4.19.0 4.20.0 semver Not specified
CNA Apache Software Foundation Apache Camel CoAP affected 3.0.0 4.14.6 semver Not specified
CNA Apache Software Foundation Apache Camel CoAP affected 4.15.0 4.18.2 semver Not specified
CNA Apache Software Foundation Apache Camel CoAP affected 4.19.0 4.20.0 semver Not specified
CNA Apache Software Foundation Apache Camel Google PubSub affected 3.0.0 4.14.6 semver Not specified
CNA Apache Software Foundation Apache Camel Google PubSub affected 4.15.0 4.18.2 semver Not specified
CNA Apache Software Foundation Apache Camel Google PubSub affected 4.19.0 4.20.0 semver Not specified

References

ReferenceSourceLinkTags
camel.apache.org/security/CVE-2026-40453.html [email protected] camel.apache.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Saroj Khadka (en)

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