What is CVE-2021-39946?

CVE-2021-39946 is a high-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2022-01-18.

How severe is CVE-2021-39946?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Gitlab

CVE-2021-39946

Improper neutralization of user input in GitLab CE/EE versions 14.3 to 14.3.6, 14.4 to 14.4.4, and 14.5 to 14.5.2 allowed an attacker to exploit XSS by abusing the generation of the HTML code related to emojis

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (60.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Gitlab — versions >=14.3, <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, Vendor Advisory)
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-2021-39946?: CVE-2021-39946 is a high-severity vulnerability in Gitlab, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2022-01-18.
How severe is CVE-2021-39946?: High severity. CVSS v3 base score is 8.7 out of 10.