Improper Input Validation in Apache Camel's Knative Component
CVE-2026-63621

5.3MEDIUM

Key Information:

Vendor

Apache
Status
Apache Camel
Vendor
CVE Published:
24 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-63621?

The Apache Camel Knative component contains a vulnerability that allows unauthenticated attackers to inject Camel-internal headers through structured-mode CloudEvent requests. This occurs when CloudEvent extension fields are read directly from JSON bodies, bypassing essential header filter strategies. Consequently, attackers can manipulate headers such as CamelHttpUri and CamelHttpPath, potentially leading to server-side request forgery (SSRF), path traversal, or message-dispatch redirection. Users are urged to upgrade to the latest versions to mitigate this vulnerability effectively.

Affected Version(s)

Apache Camel 3.15.0 < 4.14.9

Apache Camel 4.15.0 < 4.18.4

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-2026-63621
Created by oscerd

References

https://camel.apache.org/security/CVE-2026-63621.html
vendor-advisory

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
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

Andrea Cosentino
Andrea Cosentino
.