CVE-2021-4138
First published: Mon May 02 2022(Updated: )
Improved Host header checks to reject requests not sent to a well-known local hostname or IP, or the server-specified hostname.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Geckodriver | <0.30.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-4138?
CVE-2021-4138 has a severity rating classified as moderate.
How do I fix CVE-2021-4138?
To fix CVE-2021-4138, upgrade to Geckodriver version 0.30.0 or later.
What type of vulnerability is CVE-2021-4138?
CVE-2021-4138 is a host header validation vulnerability.
Who is affected by CVE-2021-4138?
CVE-2021-4138 affects users of Mozilla Geckodriver versions prior to 0.30.0.
What mitigation is available for CVE-2021-4138?
Mitigation for CVE-2021-4138 involves enforcing proper host header checks and updating to a secure version.
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