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Case File

CVE-2021-29440

HIGH · CVSS 8.4 EPSS 30.62% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-04-13 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.4. Public exploit code or proof-of-concept references have been detected in its references. Its EPSS score suggests a 30.6% probability of exploitation in the next 30 days.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
arbitrary code execution code execution
GitHub PoC Links
External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-29440
Severity
HIGH
CVSS
8.4
EPSS
30.62%

Original NVD Description

Grav is a file based Web-platform. Twig processing of static pages can be enabled in the front matter by any administrative user allowed to create or edit pages. As the Twig processor runs unsandboxed, this behavior can be used to gain arbitrary code execution and elevate privileges on the instance. The issue was addressed in version 1.7.11.

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