GO · JULY 2026 · EARLY WARNING

Integer Overflow Vulnerability in frp SSH Tunnel Gateway

EARLY WARNING · UNCONFIRMED. This page describes a developing threat that 0Day surfaced from early signals and has not yet independently confirmed. Details may change. Always verify against the primary sources before acting.

GHSA-26GQ-P25F-99CPSeverity: HIGH

An integer-overflow vulnerability has been reported in the frp server's optional SSH Tunnel Gateway, potentially allowing any unauthenticated remote attacker to crash the entire `frps` process with a single five-byte message.

What happened

An integer-overflow vulnerability, tracked as GHSA-26GQ-P25F-99CP, has been identified in the frp server's optional SSH Tunnel Gateway. This vulnerability reportedly allows any unauthenticated remote attacker to crash the entire `frps` process with a single five-byte message. The vulnerability appears to affect versions of frp (go) from 0.53.0 to 0.70.0. The issue is currently under investigation, and it is recommended to upgrade to a version of `frp` that includes the fix for this vulnerability. For more details, consult the primary sources.

How 0Day mitigates this

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