CVE-2021-20743 Cross-site scripting in EC-CUBE Email newsletters management plugin (for EC-CUBE 3.0 series)
Remote attackers can inject arbitrary scripts via a crafted page in the EC-CUBE newsletter plugin, potentially executing code in user sessions.
- 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-2021-20743?
CVE-2021-20743 is a medium-severity cross-site scripting vulnerability in EC-CUBE Email newsletters management plugin (for EC-CUBE 3.0 series), published on 22 Jun 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
Cross-site scripting vulnerability in EC-CUBE Email newsletters management plugin (for EC-CUBE 3.0 series) versions prior to version 1.0.4 allows a remote attacker to inject an arbitrary script by leading a user to a specially crafted page and to perform a specific operation.
Weakness: CWE-79
Which versions are affected by CVE-2021-20743?
It affects 1 product.
Products include Ec-Cube Email Newsletters Management.
How do I fix CVE-2021-20743?
No fix has been published for CVE-2021-20743 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-2021-20743 being exploited?
There is no known exploitation of CVE-2021-20743 in the wild and no public exploit code.
Sources
Also known as GHSA-hwfh-2mgq-w44v.