SSRF in IBM I

CVE-2026-18869

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions and access internal network services due to improper validation of FTP PORT and EPRT commands.

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

  • Ibm I — versions 7.3, 7.4, 7.5

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-18869?
CVE-2026-18869 is a medium-severity vulnerability in IBM I, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.4/10. Published 2026-09-18.
How severe is CVE-2026-18869?
Medium severity. CVSS v3 base score is 6.4 out of 10.