CVE-2019-19901 Cross-site scripting in n/a
An attacker with block creation permissions can inject scripts into block descriptions, leading to XSS when administrators configure layouts.
- 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-2019-19901?
CVE-2019-19901 is a medium-severity cross-site scripting vulnerability in n/a, published on 19 Dec 2019. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
An issue was discovered in Backdrop CMS 1.13.x before 1.13.5 and 1.14.x before 1.14.2. It doesn't sufficiently filter output when displaying certain block descriptions created by administrators. An attacker could potentially craft a specialized description, then have an administrator execute scripting when configuring a layout, aka XSS. This issue is mitigated by the fact that the attacker would be required to have the permission to create custom blocks, which is typically an administrative task.
Weakness: CWE-79
Which versions are affected by CVE-2019-19901?
It affects 1 product.
Products include Backdropcms Backdrop Cms.
How do I fix CVE-2019-19901?
No fix has been published for CVE-2019-19901 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-2019-19901 being exploited?
There is no known exploitation of CVE-2019-19901 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-86wq-h57h-6m7w.