CVE-2026-2016 | happyfish100 libfastcommon up to 1.0.84 src/base64.c base64_decode stack-based overflow (Issue 55)

A vulnerability, which was classified as critical, has been found 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.

This vulnerability is uniquely identified as CVE-2026-2016. Local access is required to approach this attack. Moreover, an exploit is present.

Applying a patch is the recommended action to fix this issue.