CVE-2017-8298 Canvs Canvas Cross-site Scripting (XSS) via title and content fields
Cross-site scripting vulnerability in Canvas CMS allows attackers to inject malicious scripts via post titles, content, tags, or user creation fields.
- 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
- None listed
What is CVE-2017-8298?
CVE-2017-8298 is a medium-severity cross-site scripting vulnerability in n/a, published on 27 Apr 2017. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
cnvs.io Canvas 3.3.0 has XSS in the title and content fields of a "Posts > Add New" action, and during creation of new tags and users.
Weakness: CWE-79
Which versions are affected by CVE-2017-8298?
2 open source packages ship an affected version, including austintoddj/canvas. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
austintoddj/canvas Packagist | All versions | None |
austintoddj/canvas Packagist | All versions | None |
Products include Cnvs Canvas.
How do I fix CVE-2017-8298?
No fix has been published for CVE-2017-8298 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-2017-8298 being exploited?
There is no known exploitation of CVE-2017-8298 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-3657-q433-mmpx.