CVE-2026-40987 Remote-file synchronizer in Spring Integration writes server-supplied filename under localDirectory without canonicalization

A malicious or compromised FTP/SFTP/SMB server can write arbitrary files anywhere on the client filesystem outside the configured local-directory with attacker-controlled content. Affected versions: Spring Integration 7.0.0 through 7.0.4; 6.5.0 through 6.5.8; 6.4.0 through 6.4.11; 6.3.0 through...

CVE-2026-40987

CVE-2026-40987 affects Spring Integration across multiple tracked branches (7.0.0–7.0.4, 6.5.0–6.5.8, 6.4.0–6.4.11, 6.3.0–6.3.14, 5.5.0–5.5.20). The connected documents describe a vulnerability where a malicious or compromised FTP/SFTP/SMB server can cause the client to write arbitrary files anyw...