What is CVE-2026-13773?

CVE-2026-13773 is a medium-severity vulnerability in Ibm Websphere Extreme Scale, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.0/10. Published 2026-06-30.

How severe is CVE-2026-13773?

Medium severity. CVSS v3 base score is 6.0 out of 10.

SSRF in Ibm Websphere Extreme Scale

CVE-2026-13773

IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme Scale's ogclient.jar call ORB.string_to_object() on an attacker-controlled IOR string during Java deserialization, turni…

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L.

Affected products

Ibm Websphere Extreme Scale — versions 8.6.1.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-13773?: CVE-2026-13773 is a medium-severity vulnerability in Ibm Websphere Extreme Scale, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.0/10. Published 2026-06-30.
How severe is CVE-2026-13773?: Medium severity. CVSS v3 base score is 6.0 out of 10.