CVE-2021-35976 Cross-site scripting in n/a
Reflected XSS in Plesk site preview allows attackers to execute JavaScript in victims' browsers without authentication.
- 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-2021-35976?
CVE-2021-35976 is a medium-severity cross-site scripting vulnerability in n/a, published on 10 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
The feature to preview a website in Plesk Obsidian 18.0.0 through 18.0.32 on Linux is vulnerable to reflected XSS via the /plesk-site-preview/ PATH, aka PFSI-62467. The attacker could execute JavaScript code in the victim's browser by using the link to preview sites hosted on the server. Authentication is not required to exploit the vulnerability.
Weakness: CWE-79
Which versions are affected by CVE-2021-35976?
It affects 1 product.
Products include Plesk Obsidian.
How do I fix CVE-2021-35976?
No fix has been published for CVE-2021-35976 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-2021-35976 being exploited?
There is no known exploitation of CVE-2021-35976 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-55cx-26p7-7qcw.