The text discusses directory traversal vulnerabilities, which allow attackers to access folders they shouldn't have access to. The authors of the text, part of the Snyk Security Research team, discovered several high-severity vulnerabilities in C/C++ codebases, including improper pathname limitation (CWE-22), arbitrary file read and write vulnerabilities, and zip slip issues. These vulnerabilities can lead to remote code execution, sensitive data exposure, and other security concerns. The text provides examples of vulnerable code and fixes for these issues, as well as general remediation advice, such as using canonical path resolution and avoiding user-provided file paths. The authors hope that their findings will help C/C++ developers prioritize information security in their work.