CVE-2021-29439

Plugins can be installed with minimal admin privileges

HIGH
7.2
CVSS Score
Published: April 13, 2021 at 07:45 PM UTC
Updated: June 17, 2026 at 03:47 AM UTC
2 products affected across 1 vendorGrav AdminGrav Plugin Admin

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Severity
HIGH7.2
Exploit prediction
EPSS 3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.10.11
Affected range stops below 1.10.11, so it looks safe — our inference, not a vendor statement
v < 1.10.11
Affected range stops below 1.10.11, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

7.2HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-863

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