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CVE-2021-29439

24
FAUCET Score

CVE-2021-29439 is a privilege escalation vulnerability in the Grav admin plugin prior to version 1.10.11, affecting getgrav grav_admin. It allows authenticated users with admin.login permission to install third-party plugins, potentially leading to arbitrary code execution and full system compromise. With a CVSS score of 7.2 (HIGH), this vulnerability has a low attack complexity and can result in high impact to confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it has garnered some community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.10.11CPE matchmatch criteria
cpe:2.3:a:getgrav:grav_admin:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.59%
Probability of exploitation in next 30 days
EPSS Percentile
83.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0259 is in the 81st percentile among its peer group of 5,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / getgrav/grav-plugin-admin/commit/a220359877fd1281f76ba732e5308e0e3002e4b1
github.com / getgrav/grav-plugin-admin/security/advisories/GHSA-wg37-cf5x-55hq
Third Party Advisory