CVE-2021-29439

HIGH 7.2CVE-2021-29439 · Published 13/04/2021 · updated 17/06/2026

In short

CVE-2021-29439 is a HIGH (CVSS 7.2) vulnerability affecting grav admin (getgrav).
Chance of exploitation in the next 30 days (EPSS): 2.6%, higher than 85.3% of all vulnerabilities.
Fix: update to 1.10.11 or later.

Package	Affected versions	Patched versions
grav admin getgrav	`< 1.10.11`	`1.10.11`

Description

The Grav admin plugin prior to version 1.10.11 does not correctly verify caller's privileges. As a consequence, users with the permission `admin.login` can install third-party plugins and their dependencies. By installing the right plugin, an attacker can obtain an arbitrary code execution primitive and elevate their privileges on the instance. The vulnerability has been addressed in version 1.10.11. As a mitigation blocking access to the `/admin` path from untrusted sources will reduce the probability of exploitation.

References

getgrav/grav-plugin-admin commit a220359
getgrav/grav-plugin-admin security advisory · Third Party Advisory

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