CVE-2019-9553 Bolt Cross-site Scripting via the slug, teaser or title parameters

Medium 6.1 Published Updated

Cross-site scripting in Bolt CMS allows attackers to inject malicious scripts via content parameters, potentially leading to session hijacking or code execution.

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
None listed

What is CVE-2019-9553?

CVE-2019-9553 is a medium-severity cross-site scripting vulnerability in n/a, published on 31 Dec 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 3.6.4 has XSS via the slug, teaser, or title parameter to editcontent/pages, a related issue to CVE-2017-11128 and CVE-2018-19933.

Weakness: CWE-79

Which versions are affected by CVE-2019-9553?

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

PackageAffectedFixed in
bolt/bolt PackagistAll versionsNone
bolt/bolt PackagistAll versionsNone

Products include Boltcms Bolt.

How do I fix CVE-2019-9553?

No fix has been published for CVE-2019-9553 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-2019-9553 being exploited?

There is no known exploitation of CVE-2019-9553 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-2g23-qmmp-fvmr.

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