CVE-2026-404539.9CriticalCWE-178

CVE-2026-40453: 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

Apache Software Foundation · Apache Camel JMS

Vendor fix available · Affected: Apache Software Foundation Apache Camel JMS · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

2.1%probability of exploitation in the next 30 days

82nd percentile

050100

Higher than 82% of scored CVEs

9.9CriticalCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products3

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Apache Software Foundation · Apache Camel JMSfrom 3.0.0 before 4.14.6; from 4.15.0 before 4.18.2; from 4.19.0 before 4.20.0
Apache Software Foundation · Apache Camel CoAPfrom 3.0.0 before 4.14.6; from 4.15.0 before 4.18.2; from 4.19.0 before 4.20.0
Apache Software Foundation · Apache Camel Google PubSubfrom 3.0.0 before 4.14.6; from 4.15.0 before 4.18.2; from 4.19.0 before 4.20.0

On the Atlas

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Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Handling of Case Sensitivity · Input Validation and Logic
Vendor: Apache Software Foundation
Published: April 2026
Band: Possible (1 to 10%), April 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-40453 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.