{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/cpes/cpe2.3aibmwebsphere_application_server9.0/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*"],"_cs_cves":[{"cvss":8.1,"id":"CVE-2026-93907"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["WebSphere Application Server (8.5, 9.0)"],"_cs_severities":["high"],"_cs_tags":["authentication-bypass","cve-2026-93907","ibm-websphere"],"_cs_type":"advisory","_cs_vendors":["IBM"],"content_html":"\u003cp\u003eIBM WebSphere Application Server versions 8.5 and 9.0 contain a critical vulnerability in the CSIv2 (Common Secure Interoperability version 2) inbound propagation handler. This flaw allows a remote, unauthenticated attacker to bypass authentication mechanisms when communicating with the application server. By sending specially crafted CSIv2 requests, an attacker can impersonate legitimate users or gain unauthorized access to administrative or application functions. Given the role of WebSphere as a core middleware component in enterprise environments, successful exploitation could lead to full application compromise, lateral movement within the environment, and data exfiltration. Defenders should prioritize identifying instances of affected versions and applying available vendor patches to mitigate the risk of unauthorized access.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-93907 permits an unauthenticated remote attacker to bypass security controls in IBM WebSphere Application Server. This can lead to unauthorized access to sensitive application data and administrative interfaces. Organizations utilizing affected versions of WebSphere (8.5 and 9.0) in internet-facing deployments are at the highest risk, as the flaw does not require local access to exploit.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdentify all instances of IBM WebSphere Application Server 8.5 and 9.0 in the environment by performing asset inventory scans.\u003c/li\u003e\n\u003cli\u003eApply the security patches provided by IBM for CVE-2026-93907 to all affected production and development instances immediately.\u003c/li\u003e\n\u003cli\u003eImplement network-level access controls to restrict access to WebSphere CSIv2 management and application ports (typically 9100-9105) to trusted IP addresses only.\u003c/li\u003e\n\u003cli\u003eMonitor web application server logs for abnormal authentication traffic or unauthorized attempts to access protected CSIv2 endpoints.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-10-13T14:40:09Z","date_published":"2026-10-13T14:40:09Z","id":"https://feed.craftedsignal.io/briefs/2026-10-websphere-auth-bypass/","summary":"IBM WebSphere Application Server versions 8.5 and 9.0 are vulnerable to an authentication bypass in the CSIv2 inbound propagation handler, potentially allowing remote unauthorized access.","title":"IBM WebSphere Application Server Authentication Bypass (CVE-2026-93907)","url":"https://feed.craftedsignal.io/briefs/2026-10-websphere-auth-bypass/"},{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*","cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:*"],"_cs_cves":[{"cvss":7.5,"id":"CVE-2026-103499"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["WebSphere Application Server - Liberty (17.0.0.3 through 26.0.0.10)","WebSphere Application Server (8.5)","WebSphere Application Server (9.0)"],"_cs_severities":["low"],"_cs_tags":["denial-of-service","vulnerability","web-server"],"_cs_type":"advisory","_cs_vendors":["IBM"],"content_html":"\u003cp\u003eIBM has identified a critical vulnerability, tracked as CVE-2026-103499, affecting multiple versions of the WebSphere Application Server and Liberty profile. The vulnerability arises from improper handling of resource management, specifically an uncontrolled resource consumption flaw. A remote, unauthenticated attacker can exploit this condition by sending specially crafted requests to the application server, leading to resource exhaustion. This impact effectively renders the service unresponsive to legitimate users, resulting in a denial-of-service (DoS) condition. The affected versions include Liberty 17.0.0.3 through 26.0.0.10, as well as IBM WebSphere Application Server versions 8.5 and 9.0. Defenders should prioritize identifying instances of these specific versions within their environment to mitigate the risk of service disruption.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability results in a denial-of-service, leading to the exhaustion of server resources such as CPU or memory. This impacts the availability of business-critical applications hosted on the affected IBM WebSphere platforms. Organizations utilizing these versions face the risk of service downtime and operational disruption from remote, unauthenticated threat actors.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eReview the server versions in use to identify instances matching Liberty 17.0.0.3 through 26.0.0.10, or WebSphere Application Server 8.5 and 9.0.\u003c/li\u003e\n\u003cli\u003eApply the official security patches provided by IBM for CVE-2026-103499 as soon as they are made available to remediate the resource consumption flaw.\u003c/li\u003e\n\u003cli\u003eMonitor webserver logs for spikes in request volume or abnormal request patterns targeted at the application server that may indicate exploitation attempts.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-10-13T14:37:04Z","date_published":"2026-10-13T14:37:04Z","id":"https://feed.craftedsignal.io/briefs/2026-10-ibm-websphere-dos/","summary":"IBM WebSphere Application Server and Liberty are susceptible to an unauthenticated remote denial-of-service attack via CVE-2026-103499, which permits uncontrolled resource consumption.","title":"IBM WebSphere Application Server Denial of Service Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-10-ibm-websphere-dos/"}],"language":"en","title":"CraftedSignal Threat Feed - Cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*","version":"https://jsonfeed.org/version/1.1"}