CVE-2026-2016
happyfish100 libfastcommon base64.c base64_decode stack-based overflow
LOW 1.9EPSS 0.3%
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.
- Affected
- happyfish100 · libfastcommon
- CVSS v4.0 VULDB
- 1.9 LOW
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 - CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1 VULDB
- 5.3 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - CVSS v2.0 VULDB
- 4.3 MEDIUM
AV:L/AC:L/Au:S/C:P/I:P/A:P - EPSS
- 0.29% chance of exploitation in the next 30 days, 20th percentile
- Published
- 2026-02-06
- Updated
- 2026-02-23
Proof-of-concept exploits (1)
- happyfish100/libfastcommon/issues/55#issue-3836362577929★ · 2026-09-06