Vulnerability in Mozilla Geckodriver
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.
EPSS: 0.008 (53.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Mozilla Geckodriver — versions unspecified
References
- security@mozilla.org (Third Party Advisory, x_refsource_MISC, Release Notes)
- security@mozilla.org (Permissions Required, Third Party Advisory, x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2021-4138?
- CVE-2021-4138 is a medium-severity vulnerability in Mozilla Geckodriver. CVSS score: 5.3/10. Published 2022-05-02.
- How severe is CVE-2021-4138?
- Medium severity. CVSS v3 base score is 5.3 out of 10.