BIT-FLUENT-BIT-2026-61674 Fluent Bit: Remote stack buffer overflow in Fluent Bit `out_forward` Secure-Forward `PONG` handler

Fluent Bit is a fast and lightweight logs, metrics, and traces processor for Linux, BSD, macOS, and Windows. From 0.11.0 until 5.0.8, plugins/outforward/forward.c secureforwardpong copies the server-controlled PONG2 reason into the 32-byte stack buffer msg with memcpy without checking its...

PT-2026-102732

Fluent Bit is a fast and lightweight logs, metrics, and traces processor for Linux, BSD, macOS, and Windows. From 0.11.0 until 5.0.8, plugins/out forward/forward.c secure forward pong copies the server-controlled PONG2 reason into the 32-byte stack buffer msg with memcpy without checking its...

CVE-2026-61674: Stack-based Buffer Overflow

Fluent Bit is a fast and lightweight logs, metrics, and traces processor for Linux, BSD, macOS, and Windows. From 0.11.0 until 5.0.8, plugins/outforward/forward.c secureforwardpong copies the server-controlled PONG2 reason into the 32-byte stack buffer msg with memcpy without checking its...

PT-2026-105021

Fluent Bit is a fast and lightweight logs, metrics, and traces processor for Linux, BSD, macOS, and Windows. From 0.11.0 until 5.0.8, plugins/out forward/forward.c secure forward pong copies the server-controlled PONG2 reason into the 32-byte stack buffer msg with memcpy without checking its...