CVE-2021-36806 Cross-site scripting in Sophos Email Appliance
Reflected XSS in Sophos Email Appliance allows attackers to redirect victims via malicious links on error pages.
- 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-2021-36806?
CVE-2021-36806 is a medium-severity cross-site scripting vulnerability in Sophos Email Appliance, published on 30 Nov 2023. 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
A reflected XSS vulnerability allows an open redirect when the victim clicks a malicious link to an error page on
Sophos Email Appliance
older than version 4.5.3.4.
Weakness: CWE-79
Which versions are affected by CVE-2021-36806?
It affects 1 product.
Products include Sophos Email Appliance.
How do I fix CVE-2021-36806?
No fix has been published for CVE-2021-36806 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-2021-36806 being exploited?
There is no known exploitation of CVE-2021-36806 in the wild and no public exploit code.
Sources
Also known as GHSA-f39q-q9f3-6vmw.