CVE-2021-36873 WordPress iQ Block Country plugin <= 1.2.11 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability
Authenticated attackers can inject persistent scripts via the block message parameter in the iQ Block Country plugin, potentially compromising user sessions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-36873?
CVE-2021-36873 is a medium-severity cross-site scripting vulnerability in Webence iQ Block Country, published on 23 Sep 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress iQ Block Country plugin (versions <= 1.2.11). Vulnerable parameter: &blockcountry_blockmessage.
Weakness: CWE-79
Which versions are affected by CVE-2021-36873?
It affects 1 product.
Products include Webence Iq Block Country.
How do I fix CVE-2021-36873?
No fix has been published for CVE-2021-36873 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-2021-36873 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-36873 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in Webence iQ Block Country
Sources
Also known as GHSA-5mcg-fw36-rwf2.