CVE-2020-13869 Comments plugin stored Cross-site Scripting via a guest name
Stored XSS in Craft CMS Comments plugin allows attackers to inject scripts via guest names, potentially compromising user sessions.
- 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
- Available
What is CVE-2020-13869?
CVE-2020-13869 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Jun 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An issue was discovered in the Comments plugin before 1.5.6 for Craft CMS. There is stored XSS via a guest name.
Weakness: CWE-79
Which versions are affected by CVE-2020-13869?
2 open source packages ship an affected version, including verbb/comments. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
verbb/comments Packagist | All versions | 1.5.5 |
verbb/comments Packagist | All versions | 1.5.5 |
Products include Verbb Comments.
How do I fix CVE-2020-13869?
Upgrade verbb/comments to 1.5.5 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-2020-13869 being exploited?
There is no known exploitation of CVE-2020-13869 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-jhhf-c849-3rh2.