CVE-2021-29439
7.2 · HIGHOverview
CVE-2021-29439 is a high-severity vulnerability affecting getgrav grav_admin. It was published on April 13, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from getgrav. Update grav_admin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| getgrav | grav_admin | >= 0, < 1.10.11 | Affected |
References
Frequently Asked Questions
What is CVE-2021-29439?
CVE-2021-29439 is a high-severity vulnerability affecting getgrav grav_admin. It was published on April 13, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2021-29439?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-29439?
Check the references section for vendor advisories and patches from getgrav. Update grav_admin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-29439?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-29439 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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