PT-2018-9537
CVE-2018-1000813
·
Published
2018-12-20
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Updated
2019-01-06
Description by
CVSS 3.1
4.8
MediumMetricsAV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Name of the Vulnerable Software and Affected Versions
Backdrop CMS versions prior to 1.11.1
Description
The issue is related to a Cross Site Scripting (XSS) vulnerability in the sanitization of custom class names used on blocks and layouts, which can result in the execution of JavaScript from an unexpected source. This can be exploited when a user is directed to an affected page while logged in.
Recommendations
For Backdrop CMS versions prior to 1.11.1, update to version 1.11.1 or later to resolve the issue.
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