CVE-2026-9311: CWE-94 Improper Control of Generation of Code ('Code Injection') in IBM WebSphere Application Server
CVE-2026-9311 is a critical vulnerability in IBM WebSphere Application Server versions 8.5 and 9.0 that allows remote code execution due to improper control over code generation, classified as CWE-94. The vulnerability enables an attacker to bypass security controls and execute arbitrary code remotely without user interaction or privileges. It has a CVSS v3.1 base score of 9.0, indicating high attack complexity but severe impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available from IBM, and no known exploits have been reported in the wild. Users should monitor IBM advisories for updates and apply fixes once released.
AI Analysis
Technical Summary
IBM WebSphere Application Server versions 8.5 and 9.0 contain a vulnerability (CVE-2026-9311) classified under CWE-94 (Improper Control of Generation of Code), which allows remote attackers to execute arbitrary code by bypassing security controls. The vulnerability has a CVSS 3.1 score of 9.0, reflecting network attack vector, high attack complexity, no privileges or user interaction required, and complete impact on confidentiality, integrity, and availability. As of the published date, no official remediation or patch has been provided by IBM, and there are no known exploits in the wild.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code on affected IBM WebSphere Application Server instances, potentially leading to full system compromise. The impact includes complete loss of confidentiality, integrity, and availability of the affected system. Given the critical severity and remote code execution nature, this vulnerability poses a significant risk to organizations running the affected versions.
Mitigation Recommendations
Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until an official fix is released, organizations should consider applying temporary mitigations recommended by IBM if available, restrict network access to the affected servers, and monitor for suspicious activity related to this vulnerability. Do not assume the vulnerability is mitigated without vendor confirmation.
CVE-2026-9311: CWE-94 Improper Control of Generation of Code ('Code Injection') in IBM WebSphere Application Server
Description
CVE-2026-9311 is a critical vulnerability in IBM WebSphere Application Server versions 8.5 and 9.0 that allows remote code execution due to improper control over code generation, classified as CWE-94. The vulnerability enables an attacker to bypass security controls and execute arbitrary code remotely without user interaction or privileges. It has a CVSS v3.1 base score of 9.0, indicating high attack complexity but severe impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available from IBM, and no known exploits have been reported in the wild. Users should monitor IBM advisories for updates and apply fixes once released.
CVSS v3.1
Score 9.0critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM WebSphere Application Server versions 8.5 and 9.0 contain a vulnerability (CVE-2026-9311) classified under CWE-94 (Improper Control of Generation of Code), which allows remote attackers to execute arbitrary code by bypassing security controls. The vulnerability has a CVSS 3.1 score of 9.0, reflecting network attack vector, high attack complexity, no privileges or user interaction required, and complete impact on confidentiality, integrity, and availability. As of the published date, no official remediation or patch has been provided by IBM, and there are no known exploits in the wild.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code on affected IBM WebSphere Application Server instances, potentially leading to full system compromise. The impact includes complete loss of confidentiality, integrity, and availability of the affected system. Given the critical severity and remote code execution nature, this vulnerability poses a significant risk to organizations running the affected versions.
Mitigation Recommendations
Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until an official fix is released, organizations should consider applying temporary mitigations recommended by IBM if available, restrict network access to the affected servers, and monitor for suspicious activity related to this vulnerability. Do not assume the vulnerability is mitigated without vendor confirmation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-05-22T18:36:49.976Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1de30be29bf47b503a5783
Added to database: 06/01/2026, 19:52:43 UTC
Last enriched: 06/08/2026, 20:57:36 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 182
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