CVE-2026-2016

Name: CVE-2026-2016
Creator: NVD / NIST
Published: 2026-02-06T12:16:26.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.9/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2026-2016 is a low-severity vulnerability rated 1.9/10 on the CVSS scale. 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. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

1.9/10

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.26%

17.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Happyfish100	Libfastcommon	<= 1.0.84

References

https://github.com/happyfish100/libfastcommon/Product
https://github.com/happyfish100/libfastcommon/commit/82f66af3e252e3e137dba0c3891570f085e79adfPatch
https://github.com/happyfish100/libfastcommon/issues/55Exploit, Vendor Advisory
https://github.com/happyfish100/libfastcommon/issues/55#issue-3836362577Exploit, Vendor Advisory
https://github.com/happyfish100/libfastcommon/issues/55#issuecomment-3776757848Exploit, Vendor Advisory
https://vuldb.com/?ctiid.344598Permissions Required, VDB Entry
https://vuldb.com/?id.344598Third Party Advisory, VDB Entry
https://vuldb.com/?submit.743873Third Party Advisory, VDB Entry

Timeline

Published: Feb 6, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-2016?

How severe is CVE-2026-2016?

CVE-2026-2016 has a CVSS score of 1.9/10 (LOW severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2026-2016?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-2016?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST