CVE-2019-5471 Cross-site scripting in GitLab

Medium 5.4 Published Updated

Persistent XSS in GitLab email notifications allows attackers to execute scripts in victim browsers, potentially leading to account takeover.

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
None listed

What is CVE-2019-5471?

CVE-2019-5471 is a medium-severity cross-site scripting vulnerability in Gitlab Gitlab, published on 9 Sep 2019. 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 input validation and output encoding issue was discovered in the GitLab email notification feature which could result in a persistent XSS. This was addressed in GitLab 12.1.2, 12.0.4, and 11.11.6.

Weakness: CWE-79

Which versions are affected by CVE-2019-5471?

It affects 1 product.

Products include Gitlab Gitlab.

How do I fix CVE-2019-5471?

No fix has been published for CVE-2019-5471 yet. Limit exposure of the affected software until one is available.

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-2019-5471 being exploited?

There is no known exploitation of CVE-2019-5471 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as GHSA-9vpf-9m6p-h2rr.

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