CVE-2020-29556: getgrav grav_cms Path Traversal

Vulnerability summary

CVE-2020-29556 is a medium (CVSS 5.5) Path Traversal vulnerability in getgrav grav_cms. EPSS estimates a 0.98% chance of exploitation in the next 30 days, higher than 61.7% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 15-03-2021
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

The Backup functionality in Grav CMS through 1.7.0-rc.17 allows an authenticated attacker to read arbitrary local files on the underlying server by exploiting a path-traversal technique. (This vulnerability can also be exploited by an unauthenticated attacker due to a lack of CSRF protection.)

• 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.