SUSE CVE-2026-73564

frp is a fast reverse proxy. From 0.53.0 until 0.70.1, frp's optional SSH Tunnel Gateway in pkg/ssh/server.go parses an SSH exec channel request by adding 4 to an attacker-controlled four-byte big-endian length. A length of 0xFFFFFFFF makes the uint32 addition wrap to 3, defeats the payload bound...

GO-2026-6103 frp: Unauthenticated Remote Denial of Service in the frp SSH Tunnel Gateway via Integer Overflow in github.com/fatedier/frp

frp: Unauthenticated Remote Denial of Service in the frp SSH Tunnel Gateway via Integer Overflow in github.com/fatedier/frp...

PT-2026-80349

frp: Unauthenticated Remote Denial of Service in the frp SSH Tunnel Gateway via Integer Overflow in github.com/fatedier/frp...

CVE-2026-73564

frp is a fast reverse proxy. From 0.53.0 until 0.70.1, frp's optional SSH Tunnel Gateway in pkg/ssh/server.go parses an SSH exec channel request by adding 4 to an attacker-controlled four-byte big-endian length. A length of 0xFFFFFFFF makes the uint32 addition wrap to 3, defeats the payload bound...

CVE-2026-73564

frp is a fast reverse proxy. From 0.53.0 until 0.70.1, frp's optional SSH Tunnel Gateway in pkg/ssh/server.go parses an SSH exec channel request by adding 4 to an attacker-controlled four-byte big-endian length. A length of 0xFFFFFFFF makes the uint32 addition wrap to 3, defeats the payload bound...

CVE-2026-73564

The CVE affects frp (frps) with the SSH Tunnel Gateway enabled. A root cause was an integer overflow in parsing an SSH exec channel: the code adds 4 to an attacker-controlled 4-byte length, and 0xFFFFFFFF wraps to 3, causing a bounds check bypass and a panic in TunnelServer.handleNewChannel. When...

CVE-2026-73564 frp: Unauthenticated Remote Denial of Service in the frp SSH Tunnel Gateway via Integer Overflow

frp is a fast reverse proxy. From 0.53.0 until 0.70.1, frp's optional SSH Tunnel Gateway in pkg/ssh/server.go parses an SSH exec channel request by adding 4 to an attacker-controlled four-byte big-endian length. A length of 0xFFFFFFFF makes the uint32 addition wrap to 3, defeats the payload bound...

CVE-2026-73564 frp: Unauthenticated Remote Denial of Service in the frp SSH Tunnel Gateway via Integer Overflow

frp is a fast reverse proxy. From 0.53.0 until 0.70.1, frp's optional SSH Tunnel Gateway in pkg/ssh/server.go parses an SSH exec channel request by adding 4 to an attacker-controlled four-byte big-endian length. A length of 0xFFFFFFFF makes the uint32 addition wrap to 3, defeats the payload bound...

CVE-2026-73564: Improper Validation of Array Index

frp is a fast reverse proxy. From 0.53.0 until 0.70.1, frp's optional SSH Tunnel Gateway in pkg/ssh/server.go parses an SSH exec channel request by adding 4 to an attacker-controlled four-byte big-endian length. A length of 0xFFFFFFFF makes the uint32 addition wrap to 3, defeats the payload bound...

Integer Overflow or Wraparound

Overview Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the exec request handling process. An attacker can cause the server process to crash and terminate all active connections by sending a specially crafted five-byte message with a manipulated length field...

Integer Overflow or Wraparound

Overview Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the exec request handling process. An attacker can cause the server process to crash and terminate all active connections by sending a specially crafted five-byte message with a manipulated length field...

PT-2026-67580

Summary An integer-overflow vulnerability in the frp server's optional SSH Tunnel Gateway lets any unauthenticated remote attacker crash the entire frps process with a single five-byte message. When the gateway parses an SSH exec channel request in pkg/ssh/server.go, it adds a small constant to a...

PT-2026-71712

Name of the Vulnerable Software and Affected Versions frp versions 0.53.0 through 0.70.0 Description The optional SSH Tunnel Gateway in pkg/ssh/server.go incorrectly parses SSH exec channel requests by adding 4 to a four-byte big-endian length controlled by the user. Providing a length of...