CVE-2021-44566 Cross site scripting in francoisjacquet/rosariosis

Medium 5.4 Published Updated

An XSS vulnerability in RosarioSIS allows attackers to inject malicious scripts via the SanitizeMarkDown function, potentially compromising user sessions.

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
Available

What is CVE-2021-44566?

CVE-2021-44566 is a medium-severity cross-site scripting vulnerability in n/a, published on 22 Feb 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A Cross Site Scripting (XSS) vulnerability exists in RosarioSIS before 4.3 via the SanitizeMarkDown function in ProgramFunctions/MarkDownHTML.fnc.php.

Weakness: CWE-79

Which versions are affected by CVE-2021-44566?

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

PackageAffectedFixed in
francoisjacquet/rosariosis PackagistAll versions4.3
francoisjacquet/rosariosis PackagistAll versions4.3

Products include Rosariosis Rosariosis.

How do I fix CVE-2021-44566?

Upgrade francoisjacquet/rosariosis to 4.3 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-2021-44566 being exploited?

There is no known exploitation of CVE-2021-44566 in the wild and no public exploit code.

Sources

Also known as GHSA-3756-hwhv-qw58.

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