CVE-2021-21671
Session fixation vulnerability in Jenkins
7.5
HIGH
CVSS 3.1
EPSS 1.7%
Description
Jenkins LTS 2.289.1 and earlier does not invalidate the previous session on login.
How to fix CVE-2021-21671
To remediate CVE-2021-21671, upgrade the affected package to a fixed version below.
- Bitnami/jenkins—upgrade to 2.300.0 or later
- Maven/org.jenkins-ci.main:jenkins-core—upgrade to 2.300 or later
Is CVE-2021-21671 being exploited?
Low — EPSS is 1.7%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 2.266.0, < 2.300.0
- >= 2.292, < 2.300
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |