What is CVE-2021-21605?

CVE-2021-21605 is a high-severity vulnerability in Jenkins, classified under Path Traversal. CVSS score: 8.0/10. Published 2021-01-13.

How severe is CVE-2021-21605?

High severity. CVSS v3 base score is 8.0 out of 10.

Path Traversal in Jenkins

CVE-2021-21605

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows users with Agent/Configure permission to choose agent names that cause Jenkins to override the global `config.xml` file.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.022 (80.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Jenkins
Jenkins Project — versions unspecified

Weakness classification (CWE)

CWE-22 — Path Traversal

References

jenkinsci-cert@googlegroups.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21605?: CVE-2021-21605 is a high-severity vulnerability in Jenkins, classified under Path Traversal. CVSS score: 8.0/10. Published 2021-01-13.
How severe is CVE-2021-21605?: High severity. CVSS v3 base score is 8.0 out of 10.