IBM WebSphere Application Server up to 1.1.9.12/8.5 code injection

Summaryinfo

A vulnerability was found in IBM WebSphere Application Server up to 1.1.9.12/8.5. It has been rated as critical. This impacts an unknown function. This manipulation causes code injection. This vulnerability is tracked as CVE-2026-9311. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in IBM WebSphere Application Server up to 1.1.9.12/8.5 and classified as critical. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to remote code execution caused by the bypass of security controls.

The advisory is shared at ibm.com. This vulnerability is known as CVE-2026-9311 since 05/22/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/17/2026). MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1762). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• IBM Tivoli Key Lifecycle Manager
• IBM Tivoli Network Manager
• IBM WebSphere Service Registry and Repository
• IBM Business Automation Workflow
• IBM WebSphere Application Server

Productinfo

Type

• Application Server Software

Vendor

• IBM

Name

• WebSphere Application Server

Version

• 1.1.9.0
• 1.1.9.1
• 1.1.9.2
• 1.1.9.3
• 1.1.9.4
• 1.1.9.5
• 1.1.9.6
• 1.1.9.7
• 1.1.9.8
• 1.1.9.9
• 1.1.9.10
• 1.1.9.11
• 1.1.9.12
• 8.0
• 8.1
• 8.2
• 8.3
• 8.4
• 8.5

License

• commercial

Website

• Vendor: https://www.ibm.com/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion