CVE-2018-20418 Craft CMS Cross-site Scripting (XSS) Vulnerability
An attacker can execute arbitrary scripts in the admin console by saving a malicious entry title in Craft CMS.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2018-20418?
CVE-2018-20418 is a medium-severity cross-site scripting vulnerability in Craftcms Craft Cms, published on 24 Dec 2018. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
index.php?p=admin/actions/entries/save-entry in Craft CMS 3.0.25 allows XSS by saving a new title from the console tab.
Weakness: CWE-79
Which versions are affected by CVE-2018-20418?
2 open source packages ship an affected version, including craftcms/cms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
craftcms/cms Packagist | All versions to 3.0.25 | None |
craftcms/cms Packagist | All versions to 3.0.25 | None |
Products include Craftcms Craft Cms.
How do I fix CVE-2018-20418?
No fix has been published for CVE-2018-20418 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-2018-20418 being exploited?
There is no known exploitation of CVE-2018-20418 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Craftcms Craft Cms
Sources
Also known as GHSA-72pf-cvwq-vgqg.