CVE-2021-30109 Cross-site Scripting in Froala Editor
Attackers can inject malicious scripts via crafted base64 strings in the hyperlink module, potentially executing code in user browsers.
- 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-2021-30109?
CVE-2021-30109 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Apr 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
Froala Editor 3.2.6 is affected by Cross Site Scripting (XSS). Under certain conditions, a base64 crafted string leads to persistent Cross-site scripting (XSS) vulnerability within the hyperlink creation module.
Weakness: CWE-79
Which versions are affected by CVE-2021-30109?
2 open source packages ship an affected version, including froala-editor. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
froala-editor npm | All versions to 3.2.6 | None |
froala-editor npm | All versions to 3.2.6 | None |
Products include Froala Froala Editor.
How do I fix CVE-2021-30109?
No fix has been published for CVE-2021-30109 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-2021-30109 being exploited?
There is no known exploitation of CVE-2021-30109 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-cq6w-w5rj-p9x8.