CVE-2021-39946

Description

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

Category

8.7
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.53% Top 15%
Vendor Advisory gitlab.com Vendor Advisory gitlab.com
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/345657 broken link vendor advisory
https://hackerone.com/reports/1398305 third party advisory permissions required
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39946.json vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-39946?
CVE-2021-39946 has been scored as a high severity vulnerability.
How to fix CVE-2021-39946?
To fix CVE-2021-39946, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39946 being actively exploited in the wild?
It is possible that CVE-2021-39946 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39946?
CVE-2021-39946 affects GitLab GitLab.
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