CVE-2015-8834 Cross-site scripting in n/a
Remote attackers can inject arbitrary web script or HTML via long comments in WordPress due to improper storage handling.
- 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-2015-8834?
CVE-2015-8834 is a medium-severity cross-site scripting vulnerability in Wordpress Wordpress, published on 22 May 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 wp-includes/wp-db.php in WordPress before 4.2.2 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-3440.
Weakness: CWE-79
Which versions are affected by CVE-2015-8834?
It affects 1 product.
Products include Wordpress Wordpress.
How do I fix CVE-2015-8834?
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-2015-8834 being exploited?
There is no known exploitation of CVE-2015-8834 in the wild and no public exploit code.
Other vulnerabilities in Wordpress Wordpress
Sources
Also known as DEBIAN-CVE-2015-8834, GHSA-c2wg-9wh8-qj37.