CVE-2009-3437 Cross-site scripting in n/a

Medium 4.3 Published Updated

Remote attackers can inject arbitrary scripts via Markdown input in the Drupal Markdown Preview module, 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
None listed

What is CVE-2009-3437?

CVE-2009-3437 is a medium-severity cross-site scripting vulnerability in n/a, published on 28 Sep 2009. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Cross-site scripting (XSS) vulnerability in the live preview feature in the Markdown Preview module 6.x for Drupal allows remote attackers to inject arbitrary web script or HTML via "Markdown input."

Weakness: CWE-79

Which versions are affected by CVE-2009-3437?

It affects 1 product.

Products include Henriksjokvist Markdown Preview.

How do I fix CVE-2009-3437?

No fix has been published for CVE-2009-3437 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-2009-3437 being exploited?

There is no known exploitation of CVE-2009-3437 in the wild and no public exploit code.

Sources

Also known as GHSA-rvcc-mqg5-gqq5.

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