Route hijacking via unfiltered LLM tool arguments
Published Jul 6, 2026 · Updated Jul 6, 2026
Improper input validation in Apache Camel 4.8.0 through 4.18.2 and 4.19.0 through 4.20.0 allows attackers to inject Exchange headers. Three AI-tool producers copy every LLM-returned JSON field into message headers without checking the declared parameter schema. Exploitation requires influence over LLM output, such as prompt injection, and the resulting route hijack can execute commands, issue server-side requests, or write files when a compatible downstream producer is present.
Summary
What happened
Improper input validation in Apache Camel 4.8.0 through 4.18.2 and 4.19.0 through 4.20.0 allows attackers to inject Exchange headers. Three AI-tool producers copy every LLM-returned JSON field into message headers without checking the declared parameter schema. Exploitation requires influence over LLM output, such as prompt injection, and the resulting route hijack can execute commands, issue server-side requests, or write files when a compatible downstream producer is present.
The record
- CVE
- CVE-2026-49042
- Published
- Jul 6, 2026
- Updated
- Jul 6, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache Camel
- Classifications
- CWE-20, T1059
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 6, 2026CVE publishedPublication date reported by the CVE source.
- Jul 6, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=4.19.0 <=4.20.0
- Affected versionversion=4.8.0 <=4.18.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- CVE-2026-49042 runnable PoC reproducersfunctional · demonstrated
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Technologies
Your stack
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Your stack
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