CVE-2021-4138
Medium
Published: 02 May 2022
Published
02 May 2022
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS Score
0.0020
41.8th percentile
Risk Priority
11
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-4138 is a medium-severity an unspecified weakness vulnerability in Mozilla Geckodriver. Its CVSS base score is 5.3 (Medium).
Operationally, ranked at the 41.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-34008
Vulnerability details
Improved Host header checks to reject requests not sent to a well-known local hostname or IP, or the server-specified hostname.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
mozilla
geckodriver
≤ 0.30.0
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.