CVE-2024-27921: getgrav grav Path Traversal

Vulnerability summary

CVE-2024-27921 is a high (CVSS 8.8) Path Traversal vulnerability in getgrav grav. EPSS estimates a 60.59% chance of exploitation in the next 30 days, higher than 99.1% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 21-03-2024
   PublishedVulnerability first disclosed.
2. 10-04-2025
   Last modifiedVulnerability information updated.

Description

Grav is an open-source, flat-file content management system. A file upload path traversal vulnerability has been identified in the application prior to version 1.7.45, enabling attackers to replace or create files with extensions like .json, .zip, .css, .gif, etc. This critical security flaw poses severe risks, that can allow attackers to inject arbitrary code on the server, undermine integrity of backup files by overwriting existing files or creating new ones, and exfiltrate sensitive data using CSS exfiltration techniques. Upgrading to patched version 1.7.45 can mitigate the issue.

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.