CVE-2021-3355 Cross-site scripting in n/a
An attacker can execute arbitrary JavaScript in the admin panel via a stored XSS vulnerability in the Sensitive Words title field.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-3355?
CVE-2021-3355 is a medium-severity cross-site scripting vulnerability in n/a, published on 24 Feb 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A stored-self XSS exists in LightCMS v1.3.4, allowing an attacker to execute HTML or JavaScript code in a vulnerable Title field to /admin/SensitiveWords.
Weakness: CWE-79
Which versions are affected by CVE-2021-3355?
It affects 1 product.
Products include Lightcms Project Lightcms.
How do I fix CVE-2021-3355?
No fix has been published for CVE-2021-3355 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-2021-3355 being exploited?
There is no known exploitation of CVE-2021-3355 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as GHSA-h87g-cj47-crv7.