CVE-2019-15484 Bolt Cross-site Scripting (XSS) via an image's alt or title field

Medium 6.1 Published Updated

An attacker can inject malicious scripts via image alt or title fields in Bolt CMS, potentially executing code in user browsers.

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-2019-15484?

CVE-2019-15484 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Aug 2019. 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

Bolt before 3.6.10 has XSS via an image's alt or title field.

Weakness: CWE-79

Which versions are affected by CVE-2019-15484?

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

PackageAffectedFixed in
bolt/bolt PackagistAll versions3.6.10
bolt/bolt PackagistAll versions3.6.10

Products include Boltcms Bolt.

How do I fix CVE-2019-15484?

Upgrade bolt/bolt to 3.6.10 or later.

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-2019-15484 being exploited?

There is no known exploitation of CVE-2019-15484 in the wild and no public exploit code.

Sources

Also known as GHSA-fp8m-xw3f-6h7x.

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