What is CVE-2021-39910?

CVE-2021-39910 is a low-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 2.6/10. Published 2021-12-13.

How severe is CVE-2021-39910?

Low severity. CVSS v3 base score is 2.6 out of 10.

XSS in Gitlab

CVE-2021-39910

An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.6 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2. GitLab was vulnerable to HTML Injection through the Swagger UI feature.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (57.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.6 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Gitlab — versions >=12.6, <14.3.6, >=14.4, <14.4.4, >=14.5, <14.5.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2021-39910?: CVE-2021-39910 is a low-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 2.6/10. Published 2021-12-13.
How severe is CVE-2021-39910?: Low severity. CVSS v3 base score is 2.6 out of 10.