CVE-2020-11973

Apache Camel Netty enables Java deserialization by default

9.8 CriticalFix available

Apache Camel Netty enables Java deserialization by default. Apache Camel 2.22.x, 2.23.x, 2.24.x, 2.25.0, 3.0.0 up to 3.1.0 are affected. 2.x users should upgrade to 2.25.1, 3.x users should upgrade to 3.2.0.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

6.76%Up 3.7 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2020-11973
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-502
Updated: 2026-11-02

CVE List No score

Record: CVE-2020-11973
Updated: 2026-11-02

EUVDEUVD-2020-0425 No score

Record: EUVD-2020-0425
Updated: 2026-11-03

GitHub AdvisoriesGHSA-h79p-32mx-fjj9 9.8

Apache Camel Netty enables Java deserialization by default

Record: GHSA-h79p-32mx-fjj9
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

OSV 9.8

Record: CVE-2020-11973
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-h79p-32mx-fjj9 9.8

Apache Camel Netty enables Java deserialization by default

Record: GHSA-h79p-32mx-fjj9
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`org.apache.camel:camel-netty` Maven	3.0.0 up to 3.2.0	3.2.0
`org.apache.camel:camel-netty` Maven	3.0.0 up to 3.2.0, plus listed versions 3.0.13.1.0	3.2.0

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-11973 is a critical vulnerability (CVSS 9.8) in Apache Camel, published May 14, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.76%, the 94th percentile. Fixed in org.apache.camel:camel-netty 3.2.0.