Improper Input Validation Vulnerability in Apache Camel NATS Component
CVE-2026-46457

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Camel
Vendor
CVE Published:
6 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-46457?

An improper input validation issue exists in the NATS component of Apache Camel, affecting versions 4.0.0 to 4.14.7, 4.15.0 to 4.18.2, and 4.19.0 to 4.20.9. This flaw allows clients capable of publishing to specific NATS subjects to inject arbitrary Camel control headers, which can manipulate the behavior of downstream message producers. As these injected headers persist across multiple internal hops, they pose significant risks, enabling potential redirection of HTTP requests, alteration of file names, or overriding of SQL queries. Successful exploitation of this vulnerability can have a severe impact depending on the specific configurations of the downstream producers. It is crucial for users to upgrade to version 4.21.0 or, if on the LTS release streams, to 4.14.8 or 4.18.3 to remediate this issue.

Affected Version(s)

Apache Camel 4.0.0 < 4.14.8

Apache Camel 4.15.0 < 4.18.3

Apache Camel 4.19.0 < 4.21.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-46457
Created by oscerd

References

https://camel.apache.org/security/CVE-2026-46457.html
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yu Bao from PayPal
.