Critical severity · published Jul 28, 2026
CVE-2026-16184
IBM WebSphere Application Server is affected by an authentication bypass
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
IBM WebSphere Application Server 9.0, and 8.5 could allow a remote attacker to bypass authentication by sending a crafted unauthenticated request.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
WebSphere Application Server · IBM
9.0; 8.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16184
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16184
Vendor Advisory
https://www.ibm.com/support/pages/node/7281628
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