What is CVE-2021-39878?

CVE-2021-39878 is a medium-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 5.8/10. Published 2021-10-05.

How severe is CVE-2021-39878?

Medium severity. CVSS v3 base score is 5.8 out of 10.

XSS in Gitlab

CVE-2021-39878

A stored Reflected Cross-Site Scripting vulnerability in the Jira integration in GitLab version 13.0 up to 14.3.1 allowed an attacker to execute arbitrary javascript code.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (52.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N.

Affected products

Gitlab — versions >=13.0, <14.1.7, >=14.2, <14.2.5, >=14.3, <14.3.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@gitlab.com (x_refsource_MISC, Broken Link)
cve@gitlab.com (Permissions Required, x_refsource_MISC)
cve@gitlab.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-39878?: CVE-2021-39878 is a medium-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 5.8/10. Published 2021-10-05.
How severe is CVE-2021-39878?: Medium severity. CVSS v3 base score is 5.8 out of 10.