CVE-2020-28459 Cross-site Scripting (XSS)
An attacker can inject malicious scripts via event handlers or javascript links in markdown-it-decorate, potentially executing code in the victim's browser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-28459?
CVE-2020-28459 is a high-severity cross-site scripting vulnerability in markdown-it-decorate, published on 25 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This affects all versions of package markdown-it-decorate. An attacker can add an event handler or use javascript:xxx for the link.
Weakness: CWE-79
Which versions are affected by CVE-2020-28459?
2 open source packages ship an affected version, including markdown-it-decorate. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
markdown-it-decorate npm | All versions to 1.2.2 | None |
markdown-it-decorate npm | All versions to 1.2.2 | None |
Products include Markdown-It-Decorate Project Markdown-It-Decorate.
How do I fix CVE-2020-28459?
No fix has been published for CVE-2020-28459 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-2020-28459 being exploited?
There is no known exploitation of CVE-2020-28459 in the wild and no public exploit code.
Sources
Also known as GHSA-rhf5-2378-3w3w.