CVE-2021-21609
Missing permission check for paths with specific prefix in Jenkins
5.3
MEDIUM
CVSS 3.1
EPSS 1.3%
Description
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not correctly match requested URLs to the list of always accessible paths, allowing attackers without Overall/Read permission to access some URLs as if they did have Overall/Read permission.
How to fix CVE-2021-21609
To remediate CVE-2021-21609, upgrade the affected package to a fixed version below.
- —upgrade to 2.274.1 or later
- —upgrade to 2.263.2 or later
Is CVE-2021-21609 being exploited?
Low — EPSS is 1.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.274.1
- from 0, < 2.263.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |