CVE-2022-3838 WPUpper Share Buttons <= 3.42 - Admin+ Stored XSS
Admin users can inject malicious scripts via unsanitized settings in the WPUpper Share Buttons plugin, affecting multisite environments.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-3838?
CVE-2022-3838 is a medium-severity cross-site scripting vulnerability in Unknown WPUpper Share Buttons, published on 5 Dec 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The WPUpper Share Buttons WordPress plugin through 3.42 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
Weakness: CWE-79
Which versions are affected by CVE-2022-3838?
It affects 1 product.
Products include Wpupper Share Buttons Project Wpupper Share Buttons.
How do I fix CVE-2022-3838?
No fix has been published for CVE-2022-3838 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-2022-3838 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-3838 exists.
Sources
Also known as GHSA-6r79-3h6c-p584.