CVE-2016-5303 Cross-site scripting in n/a
Remote attackers can inject arbitrary web script or HTML via crafted data:text/html content in form attributes, affecting Horde Groupware users.
- 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-2016-5303?
CVE-2016-5303 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Dec 2016. 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
Cross-site scripting (XSS) vulnerability in the Horde Text Filter API in Horde Groupware and Horde Groupware Webmail Edition before 5.2.16 allows remote attackers to inject arbitrary web script or HTML via crafted data:text/html content in a form (1) action or (2) xlink attribute.
Weakness: CWE-79
Which versions are affected by CVE-2016-5303?
It affects 1 product.
Products include Horde Groupware.
How do I fix CVE-2016-5303?
Upgrade to a fixed version.
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-2016-5303 being exploited?
There is no known exploitation of CVE-2016-5303 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2016-5303, GHSA-6mv9-x42q-f8qh, UBUNTU-CVE-2016-5303.