CVE-2021-22199 Cross-site scripting in GitLab

Low 3.5 Published Updated

Attackers can inject malicious scripts via scoped labels in GitLab, potentially leading to session hijacking or code execution.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2021-22199?

CVE-2021-22199 is a low-severity cross-site scripting vulnerability in Gitlab Gitlab, published on 22 Apr 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

An issue has been discovered in GitLab affecting all versions starting with 12.9. GitLab was vulnerable to a stored XSS if scoped labels were used.

Weakness: CWE-79

Which versions are affected by CVE-2021-22199?

1 open source package ship an affected version, including gitlab. It affects 1 product.

PackageAffectedFixed in
gitlab BitnamiFrom 12.9.013.8.7, 13.9.5, 13.10.1

Products include Gitlab Gitlab.

How do I fix CVE-2021-22199?

Upgrade gitlab to a fixed version for your release line: 13.8.7, 13.9.5 or 13.10.1.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-22199 being exploited?

There is no known exploitation of CVE-2021-22199 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2021-22199, GHSA-gc6j-24mw-538j, UBUNTU-CVE-2021-22199.

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