CVE-2020-13269 Cross-site scripting in GitLab

Medium 6.1 Published Updated

Reflected XSS in GitLab Static Site Editor allows arbitrary JavaScript execution, requiring a patch to prevent client-side attacks.

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

What is CVE-2020-13269?

CVE-2020-13269 is a medium-severity cross-site scripting vulnerability in Gitlab Gitlab, published on 10 Jun 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A Reflected Cross-Site Scripting vulnerability allowed the execution of arbitrary Javascript code on the Static Site Editor in GitLab CE/EE 12.10 and later through 13.0.1

Weakness: CWE-79

Which versions are affected by CVE-2020-13269?

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

PackageAffectedFixed in
gitlab BitnamiFrom 12.10.012.10.7, 13.0.1

Products include Gitlab Gitlab.

How do I fix CVE-2020-13269?

Upgrade gitlab to a fixed version for your release line: 12.10.7 or 13.0.1.

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-2020-13269 being exploited?

There is no known exploitation of CVE-2020-13269 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2020-13269, GHSA-7579-pf64-fxw7.

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