CVE-2020-21146 Feehi CMS vulnerable to Cross-site Scripting in Username Field
An attacker can inject JavaScript via the username field in Feehi CMS, leading to script execution when posts are viewed.
- 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
- Available
What is CVE-2020-21146?
CVE-2020-21146 is a medium-severity cross-site scripting vulnerability in n/a, published on 21 Jan 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
Feehi CMS 2.0.8 is affected by a cross-site scripting (XSS) vulnerability. When the user name is inserted as JavaScript code, browsing the post will trigger the XSS.
Weakness: CWE-79
Which versions are affected by CVE-2020-21146?
2 open source packages ship an affected version, including feehi/cms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
feehi/cms Packagist | All versions | 2.0.8.1 |
feehi/cms Packagist | All versions | 2.0.8.1 |
Products include Feehi Feehi Cms.
How do I fix CVE-2020-21146?
Upgrade feehi/cms to 2.0.8.1 or later.
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-2020-21146 being exploited?
There is no known exploitation of CVE-2020-21146 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2021-30108 Server-Side Request Forgery in Feehi CMS
- CVE-2022-34971 Feehi CMS arbitrary code execution via crafted PHP file
- CVE-2020-22643 Feehi CMS arbitrary file upload vulnerability
- CVE-2022-38796 Feehi CMS host header injection vulnerability
- CVE-2026-31313 Feehi CMS has an authenticated stored cross-site scripting (XSS) vulnerability via the creation/editing module
Sources
Also known as GHSA-v762-47vh-j7q3.