In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0 on Windows, PHP link() function accepts filenames with embedded \0 byte and treats them as terminating at that byte. This could lead to security vulnerabilities, e.g. in applications checking paths that the code is allowed to access.

Related CVEs

CVE-2019-11044

Key Information

GHSA ID

GHSA-c8cf-pj9v-fcr9

Published

May 24, 2022 5:04 PM

Last Modified

December 14, 2022 9:30 PM

CVSS Score

7.5 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: July 6, 2025 6:30 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.