UpHeron
All vulnerabilities

Servers and applications

CVE-2021-21687

Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create symbolic links when unarchiving a symbolic link in FilePath#untar.

Severity
Critical 9.1
Published
4 Nov 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.303.3, 2.319
Sources
NVD

Affected software

SoftwareAffected versions
JenkinsServers and applications · cpe:a:jenkins:jenkins
  • Every version before 2.303.3
  • Every version before 2.319

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-21687
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-21687