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Servers and applications

CVE-2020-2099

Jenkins 2.213 and earlier, LTS 2.204.1 and earlier improperly reuses encryption key parameters in the Inbound TCP Agent Protocol/3, allowing unauthorized attackers with knowledge of agent names to obtain the connection secrets for those agents, which can be used to connect to Jenkins, impersonating those agents.

Severity
High 8.6
Published
29 Jan 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1% in the next 30 daysHigher than 63% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
JenkinsServers and applications · cpe:a:jenkins:jenkins
  • Every version up to 2.204.1
  • Every version up to 2.218

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-2099
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-2099