CVE-2021-31930 Cross-site scripting in n/a
An unauthenticated attacker can inject persistent XSS payloads via registration fields, leading to code execution when privileged users delete the account.
- 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-2021-31930?
CVE-2021-31930 is a medium-severity cross-site scripting vulnerability in n/a, published on 19 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
Persistent cross-site scripting (XSS) in the web interface of Concerto through 2.3.6 allows an unauthenticated remote attacker to introduce arbitrary JavaScript by injecting an XSS payload into the First Name or Last Name parameter upon registration. When a privileged user attempts to delete the account, the XSS payload will be executed.
Weakness: CWE-79
Which versions are affected by CVE-2021-31930?
It affects 1 product.
Products include Concerto-Signage Concerto.
How do I fix CVE-2021-31930?
No fix has been published for CVE-2021-31930 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-2021-31930 being exploited?
There is no known exploitation of CVE-2021-31930 in the wild and no public exploit code.
Sources
Also known as GHSA-6x7c-5jc6-7qc6.