CVE-2021-34815

MEDIUM 4.8CVE-2021-34815 · Published 18/06/2021 · updated 17/06/2026

In short

CVE-2021-34815 is a MEDIUM (CVSS 4.8) vulnerability affecting canopy (checksec).
Chance of exploitation in the next 30 days (EPSS): 0.84%, higher than 57.9% of all vulnerabilities.
Fix: update to 3.5.2 or later.

Package	Affected versions	Patched versions
canopy checksec	`< 3.5.2`	`3.5.2`

CheckSec Canopy before 3.5.2 allows XSS attacks against the login page via the LOGIN_PAGE_DISCLAIMER parameter.

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