CVE-2018-16630 Kirby XSS Vulnerability

Medium 4.8 Published Updated

An attacker can execute arbitrary scripts by uploading a malicious SVG file via the site files Add option in Kirby CMS.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2018-16630?

CVE-2018-16630 is a medium-severity cross-site scripting vulnerability in n/a, published on 28 Dec 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Kirby v2.5.12 allows XSS by using the "site files" Add option to upload an SVG file.

Weakness: CWE-79

Which versions are affected by CVE-2018-16630?

2 open source packages ship an affected version, including getkirby/kirby. It affects 1 product.

PackageAffectedFixed in
getkirby/kirby PackagistAll versions to 2.5.12None
getkirby/kirby PackagistAll versions to 2.5.12None

Products include Getkirby Kirby.

How do I fix CVE-2018-16630?

No fix has been published for CVE-2018-16630 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-2018-16630 being exploited?

There is no known exploitation of CVE-2018-16630 in the wild and no public exploit code.

Sources

Also known as GHSA-3gq5-r59m-mmv2.

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