CVE-2018-1000813

low-risk
Published 2018-12-20

Backdrop CMS version 1.11.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in Sanitization of custom class names used on blocks and layouts. that can result in Execution of JavaScript from an unexpected source.. This attack appear to be exploitable via A user must be directed to an affected page while logged in.. This vulnerability appears to have been fixed in 1.11.1 and later.

Do I need to act?

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0.46% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Backdropcms

References (2)

Vendor Advisory https://backdropcms.org/security/backdrop-sa-core-2018-005
Vendor Advisory https://backdropcms.org/security/backdrop-sa-core-2018-005
26
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal