CVE-2020-23839 Cross-site scripting in n/a
Remote attackers can execute JavaScript in the admin login portal to harvest credentials when users submit the login form.
- 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-2020-23839?
CVE-2020-23839 is a medium-severity cross-site scripting vulnerability in n/a, published on 1 Sep 2020. 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 Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpage, allows remote attackers to execute JavaScript code in the client's browser and harvest login credentials after a client clicks a link, enters credentials, and submits the login form.
Weakness: CWE-79
Which versions are affected by CVE-2020-23839?
It affects 1 product.
Products include Get-Simple Getsimple Cms.
How do I fix CVE-2020-23839?
No fix has been published for CVE-2020-23839 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-2020-23839 being exploited?
There is no known exploitation of CVE-2020-23839 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-pp7f-4cfh-g7mw.