CVE-2020-2187
Lack of SSL/TLS certificate and hostname validation in Amazon EC2 Plugin
Jenkins Amazon EC2 Plugin 1.50.1 and earlier unconditionally accepts self-signed certificates and does not perform hostname validation, enabling man-in-the-middle attacks.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
NVD Score used
Jenkins Amazon EC2 Plugin 1.50.1 and earlier unconditionally accepts self-signed certificates and does not perform hostname validation, enabling man-in-the-middle attacks.
- Record
CVE-2020-2187- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-295
- Updated
- 2026-11-02
CVE List No score
Jenkins Amazon EC2 Plugin 1.50.1 and earlier unconditionally accepts self-signed certificates and does not perform hostname validation, enabling man-in-the-middle attacks.
- Record
CVE-2020-2187- Updated
- 2026-11-02
EUVDEUVD-2022-3533 No score
Jenkins Amazon EC2 Plugin 1.50.1 and earlier unconditionally accepts self-signed certificates and does not perform hostname validation, enabling man-in-the-middle attacks.
- Record
EUVD-2022-3533- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c89c-pvm7-33wj
Lack of SSL/TLS certificate and hostname validation in Amazon EC2 Plugin
Amazon EC2 Plugin connects to Windows agents via HTTPS.
Amazon EC2 Plugin 1.50.1 and earlier unconditionally accepts self-signed HTTPS certificates and does not perform hostname validation when connecting to Windows agents. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections to build agents.
Amazon EC2 Plugin 1.50.2 by default no longer accepts self-signed HTTPS certificates and performs hostname validation. A new configuration option allows restoring the previous, unsafe behavior. For more information see the plugin documentation.
- Record
GHSA-c89c-pvm7-33wj- CVSS 3.0
- 5.6 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-295
- Updated
- 2026-11-02
OSVGHSA-c89c-pvm7-33wj
Lack of SSL/TLS certificate and hostname validation in Amazon EC2 Plugin
Amazon EC2 Plugin connects to Windows agents via HTTPS.
Amazon EC2 Plugin 1.50.1 and earlier unconditionally accepts self-signed HTTPS certificates and does not perform hostname validation when connecting to Windows agents. This lack of validation could be abused using a man-in-the-middle attack to intercept these connections to build agents.
Amazon EC2 Plugin 1.50.2 by default no longer accepts self-signed HTTPS certificates and performs hostname validation. A new configuration option allows restoring the previous, unsafe behavior. For more information see the plugin documentation.
- Record
GHSA-c89c-pvm7-33wj- CVSS 3.0
- 5.6 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-295
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.jenkins-ci.plugins:ec2Maven |
through 1.50.1 | 1.50.2 |
org.jenkins-ci.plugins:ec2Maven |
before 1.50.2, plus listed versions 1.111.121.131.141.15 Show 45 moreShow less1.161.171.181.191.201.211.221.231.241.251.261.271.281.291.301.311.321.331.341.351.361.371.381.391.401.40.11.411.41.11.421.42.11.42.21.431.441.44.11.451.461.46.11.46.21.46.31.46.41.471.481.491.49.11.49.2 |
1.50.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-2187 is a medium vulnerability (CVSS 5.6) in Jenkins Amazon Ec2, published May 6, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.41%, the 35th percentile. Fixed in org.jenkins-ci.plugins:ec2 1.50.2.
References
Left out here: 3 versions. The JSON record has them.