CVE-2021-40868 Cross-site scripting in n/a
Reflected XSS in Cloudron login page allows attackers to execute scripts via the returnTo parameter, potentially leading to session hijacking.
- 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-2021-40868?
CVE-2021-40868 is a medium-severity cross-site scripting vulnerability in n/a, published on 21 Sep 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
In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.
Weakness: CWE-79
Which versions are affected by CVE-2021-40868?
It affects 1 product.
Products include Cloudron Cloudron.
How do I fix CVE-2021-40868?
No fix has been published for CVE-2021-40868 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-2021-40868 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-40868 exists.
Public exploit code: 1 Exploit-DB entry and 1 Nuclei template.
Sources
Also known as GHSA-66gc-ch9m-r42v.