{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-55200/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-17T19:45:11.371Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-55200","@id":"https://www.cve.org/CVERecord?id=CVE-2026-55200","description":"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."},"products":[{"@id":"cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"Update to a fixed version: 7acf3dfda80c91c3a8c9f2372546301d4a1a7a8.","timestamp":"2026-06-17T19:45:11.371Z"}]}