← Vulnerability feed

Vulnerability record · CVE-2026-8646 · published 22 June 2026

CVE-2026-8646: Ibm websphere application server http request smuggling vulnerability

Ibm · Websphere Application Server

IBM WebSphere Application Server 9.0 and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information.

9.1 CVSS 3.1 Critical EPSS 0.59% · top 54.1% CWE-444 · HTTP request smuggling
9.1CVSS 3.1 base score
0.59%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
24 Jun 2026Last modified by NVD

Description

IBM WebSphere Application Server 9.0 and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to HTTP request smuggling. A remote attacker could smuggle a specially crafted request to the application server thereby allowing the attacker to bypass security controls, spoof identity, escalate privilege, and expose sensitive information.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.ibm.com/support/pages/node/7276579 Vendor Advisory

Track CVE-2026-8646 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2015-7450IBM products Java deserialization RCE via Commons CollectionsMultiple IBM analytics, business, IT infrastructure, and mobile/social products expose serialized-object interfaces that deserialize untrusted Java o…KEVEPSS 98%analysed10.0CVE-2015-1920Ibm websphere application server improper access control vulnerabilityIBM WebSphere Application Server (WAS) 6.1 through 6.1.0.47, 7.0 before 7.0.0.39, 8.0 before 8.0.0.11, and 8.5 before 8.5.5.6 allows remote attackers…EPSS 6.8%10.0CVE-2013-1777Apache geronimo code injection vulnerabilityThe JMX Remoting functionality in Apache Geronimo 3.x before 3.0.1, as used in IBM WebSphere Application Server (WAS) Community Edition 3.0.0.3 and o…EPSS 9.8%10.0CVE-2013-0462Ibm websphere application server vulnerabilityUnspecified vulnerability in IBM WebSphere Application Server (WAS) 6.1, 7.0 before 7.0.0.27, 8.0, and 8.5 has unknown impact and attack vectors.EPSS 1.8%10.0CVE-2012-5955Ibm http server vulnerabilityUnspecified vulnerability in the IBM HTTP Server component 5.3 in IBM WebSphere Application Server (WAS) for z/OS allows remote attackers to execute …EPSS 4.4%10.0CVE-2011-1377Ibm websphere application server vulnerabilityThe Web Services Security component in the Web Services Feature Pack before 6.1.0.41 for IBM WebSphere Application Server (WAS) 6.1 does not properly…EPSS 2.3%10.0CVE-2010-3186Ibm websphere application server improper input validation vulnerabilityIBM WebSphere Application Server (WAS) 7.x before 7.0.0.13, and WebSphere Application Server Feature Pack for Web Services 6.1.0.9 through 6.1.0.32, …EPSS 2.6%10.0CVE-2010-0425Apache mod_isapi on Windows remote code execution via orphaned callbacksmod_isapi in Apache HTTP Server on Windows does not ensure request processing is complete before calling isapi_unload for an ISAPI .dll module, leavi…EPSS 94%analysed

Source: NIST National Vulnerability Database (record CVE-2026-8646), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.