CVE-2026-2016
happyfish100 libfastcommon base64.c base64_decode stack-based overflow
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-121 CWE-119 |
| Vendor | happyfish100 |
| Product | libfastcommon |
| Published | Feb 6, 2026 |
| Last Updated | Feb 23, 2026 |
Stay Ahead of the Next One
Get instant alerts for happyfish100 libfastcommon
Be the first to know when new medium vulnerabilities affecting happyfish100 libfastcommon are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
happyfish100 / libfastcommon
1.0.0 1.0.1 1.0.2 1.0.3 1.0.4 1.0.5 1.0.6 1.0.7 1.0.8 1.0.9 1.0.10 1.0.11 1.0.12 1.0.13 1.0.14 1.0.15 1.0.16 1.0.17 1.0.18 1.0.19 1.0.20 1.0.21 1.0.22 1.0.23 1.0.24 1.0.25 1.0.26 1.0.27 1.0.28 1.0.29 1.0.30 1.0.31 1.0.32 1.0.33 1.0.34 1.0.35 1.0.36 1.0.37 1.0.38 1.0.39 1.0.40 1.0.41 1.0.42 1.0.43 1.0.44 1.0.45 1.0.46 1.0.47 1.0.48 1.0.49 1.0.50 1.0.51 1.0.52 1.0.53 1.0.54 1.0.55 1.0.56 1.0.57 1.0.58 1.0.59 1.0.60 1.0.61 1.0.62 1.0.63 1.0.64 1.0.65 1.0.66 1.0.67 1.0.68 1.0.69 1.0.70 1.0.71 1.0.72 1.0.73 1.0.74 1.0.75 1.0.76 1.0.77 1.0.78 1.0.79 1.0.80 1.0.81 1.0.82 1.0.83 1.0.84
References
vuldb.com: https://vuldb.com/?id.344598 vuldb.com: https://vuldb.com/?ctiid.344598 vuldb.com: https://vuldb.com/?submit.743873 github.com: https://github.com/happyfish100/libfastcommon/issues/55 github.com: https://github.com/happyfish100/libfastcommon/issues/55#issuecomment-3776757848 github.com: https://github.com/happyfish100/libfastcommon/issues/55#issue-3836362577 github.com: https://github.com/happyfish100/libfastcommon/commit/82f66af3e252e3e137dba0c3891570f085e79adf github.com: https://github.com/happyfish100/libfastcommon/
Credits
🔍 liloler (VulDB User)