Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 60.8%
CVSS Severity
CVSS v3 Score 4.8
CVSS v2 Score 3.5
References
Products affected by CVE-2019-19901
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cpe:2.3:a:backdropcms:backdrop_cms:1.13.0
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cpe:2.3:a:backdropcms:backdrop_cms:1.13.1
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cpe:2.3:a:backdropcms:backdrop_cms:1.13.2
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cpe:2.3:a:backdropcms:backdrop_cms:1.13.3
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cpe:2.3:a:backdropcms:backdrop_cms:1.13.4
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cpe:2.3:a:backdropcms:backdrop_cms:1.14.0
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cpe:2.3:a:backdropcms:backdrop_cms:1.14.1