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Fencer Vulns
critical 9.1

CVE-2026-8644 json

IBM WebSphere Application Server is affected by an identity spoofing vulnerability

published 2026-06-01 5 mo ago modified 2026-07-22 3 mo ago also EUVD-2026-33732

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to identity spoofing.

Patch / fix

  • ibm websphere_application_server 8.5.5.30, 9.0.5.29

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected products

  • IBM WebSphere Application Server

Classification

Weakness
  • CWE-290 Authentication Bypass by Spoofing

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.