CVE-2021-20723 Cross-site scripting in [MailForm01] free edition
Remote attackers can inject arbitrary scripts via reflected XSS in the MailForm01 free edition, potentially compromising 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-2021-20723?
CVE-2021-20723 is a medium-severity cross-site scripting vulnerability in PHP Factory [MailForm01] free edition, published on 24 May 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
Reflected cross-site scripting vulnerability in [MailForm01] free edition (versions which the last updated date listed at the top of descriptions in the program file is from 2014 December 12 to 2018 July 27) allows a remote attacker to inject an arbitrary script via unspecified vectors.
Weakness: CWE-79
Which versions are affected by CVE-2021-20723?
It affects 1 product.
Products include Mailform01 Project Mailform01.
How do I fix CVE-2021-20723?
No fix has been published for CVE-2021-20723 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-2021-20723 being exploited?
There is no known exploitation of CVE-2021-20723 in the wild and no public exploit code.
Sources
Also known as GHSA-cx92-xx5x-453q.