XML External Entity (XXE) injection vulnerabilities occur when poorly configured XML parsers process user supplied input without sufficient validation. Attackers can exploit this vulnerability to manipulate XML content and inject malicious external entity references.

Related CVEs

CVE-2021-27777

Key Information

GHSA ID

GHSA-cvfm-9587-3rg8

Published

May 13, 2022 12:00 AM

Last Modified

May 25, 2022 12:00 AM

CVSS Score

7.5 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: September 16, 2025 6:29 AM

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