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PatchSiren cyber security CVE debrief

CVE-2026-40987 Spring CVE debrief

CVE-2026-40987 is a HIGH severity vulnerability with a CVSS score of 7.1. 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. This issue affects Spring Integration versions 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, and 5.5.0 through 5.5.20.

Vendor
Spring
Product
Spring Integration
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-09-04
Advisory published
2026-06-11
Advisory updated
2026-09-04

Who should care

Users of affected Spring Integration versions should review and apply patches or mitigations.

Technical summary

The vulnerability allows an attacker to write arbitrary files on the client filesystem outside the configured local directory, potentially leading to code execution or data tampering.

Defensive priority

HIGH

Recommended defensive actions

  • Apply patches or updates for affected Spring Integration versions.
  • Review and restrict access to FTP/SFTP/SMB servers.
  • Monitor for suspicious file system changes.

Evidence notes

Evidence suggests that the vendor is likely Spring, based on the reference to spring.io.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-40987 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-40987

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-40987 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-40987

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.