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

7.1HIGH

Key Information:

Vendor

Spring

Status
Spring Integration
Vendor
CVE Published:
11 June 2026

What is CVE-2026-40987?

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 6.3.14; 5.5.0 through 5.5.20.

Affected Version(s)

Spring Integration 7.0.0 < 7.0.5

Spring Integration 6.5.0 < 6.5.9

Spring Integration 6.4.0 < 6.4.12

References

https://spring.io/security/cve-2026-40987

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.