What is CVE-2021-21623?

CVE-2021-21623 is a medium-severity vulnerability in Jenkins Matrix_authorization_strategy, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2021-03-18.

How severe is CVE-2021-21623?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Jenkins Matrix_authorization_strategy

CVE-2021-21623

An incorrect permission check in Jenkins Matrix Authorization Strategy Plugin 2.6.5 and earlier allows attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission for parent folders.

Vulnerability class: Broken Access Control

EPSS: 0.010 (59.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Jenkins Matrix_authorization_strategy
Jenkins Project Matrix Authorization Strategy Plugin — versions unspecified, 2.5.2, 2.6.3.1

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

jenkinsci-cert@googlegroups.com (x_refsource_CONFIRM, Vendor Advisory)
jenkinsci-cert@googlegroups.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-21623?: CVE-2021-21623 is a medium-severity vulnerability in Jenkins Matrix_authorization_strategy, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2021-03-18.
How severe is CVE-2021-21623?: Medium severity. CVSS v3 base score is 6.5 out of 10.