CVE-2019-16546

Severity: medium (CVSS 5.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-11-21 · updated 2026-06-17
Weakness: CWE-639

Description

Jenkins Google Compute Engine Plugin 4.1.1 and earlier does not verify SSH host keys when connecting agents created by the plugin, enabling man-in-the-middle attacks.

Affected products

Jenkins project Jenkins Google Compute Engine Plugin: before 4.2.0 — fixed in 4.2.0

How to fix

Upgrade to a fixed version: Jenkins project Jenkins Google Compute Engine Plugin 4.2.0. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2019/11/21/1
https://jenkins.io/security/advisory/2019-11-21/#SECURITY-1584
http://www.openwall.com/lists/oss-security/2019/11/21/1
https://jenkins.io/security/advisory/2019-11-21/#SECURITY-1584

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