Vulnerability Database

296,662

Total vulnerabilities in the database

CVE-2021-4138

Improved Host header checks to reject requests not sent to a well-known local hostname or IP, or the server-specified hostname.

  • Published: May 3, 2022
  • Updated: Apr 14, 2023
  • CVE: CVE-2021-4138
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.3
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v2:

  • Severity: Medium
  • Score: 5
  • AV:N/AC:L/Au:N/C:N/I:P/A:N

No CWE or OWASP classifications available.

Software From Fixed in
mozilla / geckodriver - 0.30.0