CVE-2026-2016
Last modified
CVE-2026-2016 is a high-severity vulnerability rated 7.8/10 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/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Happyfish100 | Libfastcommon | <= 1.0.84 |
References
- 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
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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