CVE-2021-24276 Contact Form by Supsystic < 1.7.15 - Reflected Cross-Site scripting (XSS)
Attackers can execute arbitrary scripts in the context of other users via the unsanitized tab parameter in the Contact Form by Supsystic plugin.
- 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
- None listed
What is CVE-2021-24276?
CVE-2021-24276 is a medium-severity cross-site scripting vulnerability in Contact Form by Supsystic, published on 5 May 2021. 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
The Contact Form by Supsystic WordPress plugin before 1.7.15 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue
Weakness: CWE-79
Which versions are affected by CVE-2021-24276?
It affects 1 product.
Products include Supsystic Contact Form.
How do I fix CVE-2021-24276?
No fix has been published for CVE-2021-24276 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-2021-24276 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-24276 exists.
Public exploit code: 1 Exploit-DB entry and 1 Nuclei template.
Other vulnerabilities in Contact Form by Supsystic
Sources
Also known as GHSA-p8j5-xg8p-f3xm.