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IBM disclosed two vulnerabilities in traditional IBM WebSphere Application Server affecting versions 9.0 and 8.5, led by CVE-2026-14512, a pre-authentication unsafe deserialization flaw rated CVSS 9.8. The issue could allow a remote attacker to bypass authentication or achieve arbitrary code execution without user interaction, creating a high-risk path to full compromise of exposed WebSphere environments.
IBM also identified CVE-2026-14528, a CVSS 7.4 flaw that could expose sensitive information through insertion into log files. The company directed customers to apply the interim fix for APAR PH72166 or upgrade to Fix Pack 9.0.5.29+ for WebSphere 9.0 and Fix Pack 8.5.5.31+ for WebSphere 8.5, and said no workarounds or mitigations are available.
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4 events from the most recent confirmed update back to the earliest known activity.
On 2026-07-28, IBM disclosed CVE-2026-14446 affecting traditional IBM WebSphere Application Server 8.5 and 9.0. The flaw was described as a critical broken access control and privilege escalation issue in the administrative console that could be exploited remotely without authentication.
On 2026-07-28, CVE-2026-14512 was recorded as affecting traditional IBM WebSphere Application Server versions 9.0 and 8.5. The vulnerability was described as a pre-authentication unsafe deserialization issue that could allow a remote attacker to bypass authentication or execute arbitrary code.
On 2026-07-28, IBM published a security bulletin for traditional IBM WebSphere Application Server 9.0 and 8.5 covering CVE-2026-14512, a pre-authentication unsafe deserialization flaw, and CVE-2026-14528, a sensitive information exposure issue. IBM recommended applying interim fix APAR PH72166 or upgrading to Fix Pack 9.0.5.29+ or 8.5.5.31+, and said no workarounds or mitigations were available.
On 2026-07-17, ACN/CSIRT Italia published a notice about a newly disclosed high-severity IBM WebSphere vulnerability that could let an attacker bypass authentication. The notice said affected products included traditional WebSphere Application Server 8.5.x before 8.5.5.31, 9.0.x before 9.0.5.29, and WebSphere Liberty from 17.0.0.3 up to but excluding 26.0.0.8, and advised updating per IBM guidance.
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IBM disclosed a critical `CVE-2026-8633` vulnerability in WebSphere Application Server and WebSphere Liberty deployments that use the optional **Web Server Plug-ins** component, warning that unauthenticated attackers can send specially crafted HTTP requests to execute arbitrary commands on the host. The flaw, classified as improper control of code generation (`CWE-94`) and rated `CVSS 9.8`, affects WebSphere Application Server traditional and Liberty versions `8.5` and `9.0`, with successful exploitation potentially leading to full system compromise. IBM also patched `CVE-2026-8620`, an HTTP request smuggling issue that could let attackers bypass security controls and manipulate backend communications in affected environments. The company said both issues are addressed through **APAR `PH71342`** and related fix packs, and advised administrators to apply the fixes, validate updates in non-production environments, monitor HTTP traffic, restrict exposure of plug-in endpoints, use WAF protections, and perform threat hunting for signs of exploitation.
Jun 29, 2026
IBM disclosed multiple high-severity vulnerabilities affecting **WebSphere** and **webMethods Integration Server**, exposing enterprise middleware environments to remote compromise. In WebSphere, the reported issues include remote code execution flaws tracked as `CVE-2026-9311`, `CVE-2026-9330`, and `CVE-2026-9319`, alongside an authentication bypass and identity spoofing issue, `CVE-2026-8644`. Affected deployments include traditional WebSphere versions **9.0** and **8.5**, with IBM issuing interim fixes through specific APARs and urging administrators to verify configurations and apply patches quickly. A separate IBM advisory covers **webMethods Integration Server** `CVE-2025-36072`, a deserialization-based remote code execution flaw that can be exploited by an authenticated attacker with service execution privileges through internal APIs or protocols such as `IDataBin`. The vulnerability affects versions **10.11** through `10.11_Core_Fix22`, **10.15** through `10.15_Core_Fix22`, and **11.1** through `11.1_Core_Fix6` if they have not received the latest core fixes. Successful exploitation could allow arbitrary code execution in the Integration Server process, enabling lateral movement, persistence, and data exfiltration across business-critical systems.
Jun 29, 2026
IBM disclosed multiple vulnerabilities in the optional **Web Server Plug-ins** used with **WebSphere Application Server** and **WebSphere Liberty**, including **CVE-2026-8633**, a critical unauthenticated code injection flaw rated **CVSS 9.8**, and **CVE-2026-8620**, an **HTTP request smuggling** issue rated **CVSS 7.5**. The bugs affect supported **8.5** and **9.0** plug-in branches that sit in front of back-end WebSphere servers on platforms including Apache HTTP Server, Microsoft IIS, and IBM HTTP Server, allowing specially crafted HTTP requests to bypass trust boundaries, reach internal application servers, and potentially achieve arbitrary code execution and full system compromise. IBM said **no workarounds or mitigations are available** and directed customers to apply interim fixes or upgrade to fixed plug-in versions tied to **APAR PH71342**, later updated under **PH71376**. IBM support notices said fixes were released through Fix Central for affected **9.0.5.24-9.0.5.27** and **8.5.5.25-8.5.5.29** ranges, with permanent remediation targeted for inclusion in **WebSphere Application Server 9.0.5.28** and **8.5.5.30**. The combined disclosure raised concern that request smuggling could help attackers bypass perimeter controls before exploiting the RCE flaw in exposed enterprise deployments.
Jul 12, 2026