This page tracks the Alpine Linux fix status. The vulnerability itself is described on the main CVE page.
View CVE-2026-55200 →
ALPINE-CVE-2026-55200
libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bou...
Original description
The description as published by the source.
libssh2 through 1.11.1, fixed in commit 7acf3df contains an out-of-bounds write vulnerability in ssh2_transport_read() that fails to enforce upper bounds on packet_length field. Remote attackers can send crafted SSH packets with excessively large packet_length values to corrupt heap memory and achieve remote code execution.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Alpine:v3.21
libssh2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.1-r2"}]}]
Alpine:v3.22
libssh2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.1-r2"}]}]
Alpine:v3.23
libssh2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.1-r3"}]}]
Alpine:v3.24
libssh2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.11.1-r3"}]}]
Alpine:v3.24
rust
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.96.1-r0"}]}]
References
- advisory security.alpinelinux.org