CVE-2021-24593 Business Hours Indicator < 2.3.5 - Authenticated Stored XSS
Authenticated attackers can inject malicious scripts via the 'Now closed message' setting, leading to stored XSS in the Business Hours Indicator plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-24593?
CVE-2021-24593 is a medium-severity cross-site scripting vulnerability in Unknown Business Hours Indicator, published on 30 Aug 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Business Hours Indicator WordPress plugin before 2.3.5 does not sanitise or escape its 'Now closed message" setting when outputting it in the backend and frontend, leading to an Authenticated Stored Cross-Site Scripting issue
Weakness: CWE-79
Which versions are affected by CVE-2021-24593?
It affects 1 product.
Products include Business Hours Indicator Project Business Hours Indicator.
How do I fix CVE-2021-24593?
No fix has been published for CVE-2021-24593 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-2021-24593 being exploited?
There is no known exploitation of CVE-2021-24593 in the wild and no public exploit code.
Sources
Also known as GHSA-m8hc-gpvf-58px.