CVE-2023-1400 Modern Events Calendar lite < 6.5.2 - Admin+ Stored XSS
Admin users can inject malicious scripts via unsanitized settings in the Modern Events Calendar Lite plugin, bypassing unfiltered_html restrictions.
- 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-2023-1400?
CVE-2023-1400 is a medium-severity cross-site scripting vulnerability in Unknown Modern Events Calendar Lite, published on 27 Mar 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Modern Events Calendar Lite WordPress plugin before 6.5.2 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).
Which versions are affected by CVE-2023-1400?
It affects 1 product.
Products include Webnus Modern Events Calendar Lite.
How do I fix CVE-2023-1400?
No fix has been published for CVE-2023-1400 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-2023-1400 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-1400 exists.
Other vulnerabilities in Unknown Modern Events Calendar Lite
- CVE-2021-24946 Modern Events Calendar < 6.1.5 - Unauthenticated Blind SQL Injection
- CVE-2021-24149 Modern Events Calendar Lite < 5.16.6 - Authenticated SQL Injection
- CVE-2021-24146 Modern Events Calendar Lite < 5.16.5 - Unauthenticated Events Export
- CVE-2021-24145 Modern Events Calendar Lite < 5.16.5 - Authenticated Arbitrary File Upload leading to RCE
- CVE-2021-24925 Modern Events Calendar Lite < 6.1.5 - Reflected Cross-Site Scripting
Sources
Also known as GHSA-3cw2-x5r6-wgmh.