XSS in Backdropcms Backdrop Cms
CVE-2019-19901
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.006 (44.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Backdropcms Backdrop_cms
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-19901?
- CVE-2019-19901 is a medium-severity vulnerability in Backdropcms Backdrop Cms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2019-12-19.
- How severe is CVE-2019-19901?
- Medium severity. CVSS v3 base score is 4.8 out of 10.