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CVE-2021-38561

7.5 · HIGH

golang.org/x/text/language in golang.org/x/text before 0.3.7 can panic with an out-of-bounds read during BCP 47 language tag parsing.

Published Dec 26, 2022CWE-125EPSS 1.43%

Overview

CVE-2021-38561 is a high-severity vulnerability. It was published on December 26, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

golang.org/x/text/language in golang.org/x/text before 0.3.7 can panic with an out-of-bounds read during BCP 47 language tag parsing. Index calculation is mishandled. If parsing untrusted user input, this can be used as a vector for a denial-of-service attack.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdeps.dev/advisory/OSV/GO-2021-0113Refgo.googlesource.com/text/+/383b2e75a7a4198c42f8f87833eefb772868a56fRefgroups.google.com/g/golang-announceRefpkg.go.dev/golang.org/x/text/languageRefdeps.dev/advisory/OSV/GO-2021-0113Refgo.googlesource.com/text/+/383b2e75a7a4198c42f8f87833eefb772868a56fRefgroups.google.com/g/golang-announceRefpkg.go.dev/golang.org/x/text/language

How CyberStrike helps

Frequently asked questions

What is CVE-2021-38561?

CVE-2021-38561 is a high-severity vulnerability. It was published on December 26, 2022 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2021-38561?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-38561?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-38561?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-38561 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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