CVE-2020-21929 Cross-site scripting in n/a
Authenticated attackers can inject arbitrary scripts via the web_copyright field in Eyoucms, leading to potential code execution.
- 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-2020-21929?
CVE-2020-21929 is a medium-severity cross-site scripting vulnerability in Eyoucms Eyoucms, published on 10 Aug 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 cross site scripting (XSS) vulnerability in the web_copyright field of Eyoucms v1.4.1 allows authenticated attackers to execute arbitrary web scripts or HTML.
Weakness: CWE-79
Which versions are affected by CVE-2020-21929?
It affects 1 product.
Products include Eyoucms Eyoucms.
How do I fix CVE-2020-21929?
No fix has been published for CVE-2020-21929 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-2020-21929 being exploited?
There is no known exploitation of CVE-2020-21929 in the wild and no public exploit code.
Other vulnerabilities in Eyoucms Eyoucms
Sources
Also known as GHSA-9646-qh5v-2ffc.