CVE-2021-34254

MEDIUM 6.1CVE-2021-34254 · Published 28/06/2021 · updated 17/06/2026

In short

CVE-2021-34254 is a MEDIUM (CVSS 6.1) vulnerability affecting umbraco cms (umbraco).
Chance of exploitation in the next 30 days (EPSS): 0.71%, higher than 53.5% of all vulnerabilities.
Fix: update to 7.15.7 or later.

Package	Affected versions	Patched versions
umbraco cms umbraco	`< 7.15.7`	`7.15.7`

Umbraco CMS before 7.15.7 is vulnerable to Open Redirection due to insufficient url sanitization on booting.aspx.

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