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CVE-2026-2016

5.3 · MEDIUM

A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84.

Published Feb 6, 2026CWE-119EPSS 0.29%

Overview

CVE-2026-2016 is a medium-severity vulnerability. It was published on February 6, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A security vulnerability has been detected in happyfish100 libfastcommon up to 1.0.84. Affected by this vulnerability is the function base64_decode of the file src/base64.c. The manipulation leads to stack-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. The identifier of the patch is 82f66af3e252e3e137dba0c3891570f085e79adf. Applying a patch is the recommended action to fix this issue.

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

GitHubgithub.com/happyfish100/libfastcommon/GitHubgithub.com/happyfish100/libfastcommon/commit/82f66af3e252e3e137dba0c3891570f085e79adfGitHubgithub.com/happyfish100/libfastcommon/issues/55GitHubgithub.com/happyfish100/libfastcommon/issues/55#issue-3836362577GitHubgithub.com/happyfish100/libfastcommon/issues/55#issuecomment-3776757848Refvuldb.com/?ctiid.344598Refvuldb.com/?id.344598Refvuldb.com/?submit.743873

How CyberStrike helps

Frequently asked questions

What is CVE-2026-2016?

CVE-2026-2016 is a medium-severity vulnerability. It was published on February 6, 2026 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-2016?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-2016?

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-2026-2016?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-2016 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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