What is CVE-2020-2306?

CVE-2020-2306 is a medium-severity vulnerability in Jenkins Mercurial. CVSS score: 4.3/10. Published 2020-11-04.

How severe is CVE-2020-2306?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Jenkins Mercurial

CVE-2020-2306

A missing permission check in Jenkins Mercurial Plugin 2.11 and earlier allows attackers with Overall/Read permission to obtain a list of names of configured Mercurial installations.

Published 2020-11-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (63.8th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Jenkins Mercurial
Jenkins Project Mercurial Plugin — versions unspecified, 2.10.1, 2.9.1

References

www.jenkins.io/security/advisory/2020-11-04/ (Vendor Advisory)

Frequently asked questions

What is CVE-2020-2306?: CVE-2020-2306 is a medium-severity vulnerability in Jenkins Mercurial. CVSS score: 4.3/10. Published 2020-11-04.
How severe is CVE-2020-2306?: Medium severity. CVSS v3 base score is 4.3 out of 10.