VULNERABILITY INTELLIGENCE

CVE-2021-27777

CVSS score7.5 HIGH
EPSS probability0.85%
CISA KEVNot currently listed
Published2022-05-12
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Description

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.

Weakness classification

  • psirt@hcl.com: CWE-91
  • nvd@nist.gov: CWE-611

Primary references