{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-8633/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-8633"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["WebSphere Application Server","WebSphere Application Server Liberty","IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5","IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 9.0"],"_cs_severities":["critical"],"_cs_tags":["rce","websphere","cve-2026-8633"],"_cs_type":"advisory","_cs_vendors":["IBM"],"content_html":"\u003cp\u003eIBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5 and 9.0, as well as IBM WebSphere Application Server and WebSphere Application Server Liberty, are vulnerable to remote code execution. This vulnerability, identified as CVE-2026-8633, can be exploited by sending a specially crafted request to the Web Server Plug-ins. Successful exploitation would allow an attacker to execute arbitrary code on the targeted system. This vulnerability poses a significant threat to organizations using these products, as it could lead to complete system compromise, data breaches, and service disruption.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a vulnerable IBM WebSphere Application Server or WebSphere Liberty instance with exposed Web Server Plug-ins.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP request specifically designed to exploit the remote code execution vulnerability (CVE-2026-8633).\u003c/li\u003e\n\u003cli\u003eThe attacker sends the specially crafted request to the vulnerable Web Server Plug-ins endpoint.\u003c/li\u003e\n\u003cli\u003eThe Web Server Plug-ins process the malicious request, failing to properly sanitize or validate the input.\u003c/li\u003e\n\u003cli\u003eDue to the vulnerability, the malicious request triggers the execution of arbitrary code within the context of the Web Server Plug-ins process.\u003c/li\u003e\n\u003cli\u003eThe attacker leverages the initial code execution to escalate privileges or move laterally within the compromised system.\u003c/li\u003e\n\u003cli\u003eThe attacker installs a webshell or other persistent backdoor for continued access.\u003c/li\u003e\n\u003cli\u003eThe attacker performs malicious activities such as data exfiltration, system compromise, or denial of service.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-8633 can lead to complete compromise of the affected IBM WebSphere Application Server or WebSphere Liberty instance. This could result in data breaches, loss of sensitive information, disruption of critical business services, and potential financial losses. Given the widespread use of WebSphere in enterprise environments, this vulnerability has the potential to impact numerous organizations across various sectors.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the security patch provided by IBM to address CVE-2026-8633 as soon as possible. Refer to \u003ca href=\"https://www.ibm.com/support/pages/node/7274072\"\u003ehttps://www.ibm.com/support/pages/node/7274072\u003c/a\u003e for the official fix.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect CVE-2026-8633 Exploitation Attempt via Malicious Request\u0026rdquo; to detect suspicious requests targeting the Web Server Plug-ins.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity, such as unusual request patterns or attempts to execute commands, as indicated by the \u0026ldquo;webserver\u0026rdquo; category log source.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-26T18:18:23Z","date_published":"2026-05-26T18:18:23Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-8633-websphere-rce/","summary":"IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty are vulnerable to remote code execution in the Web Server Plug-ins, through a specially crafted request (CVE-2026-8633).","title":"CVE-2026-8633: IBM WebSphere Application Server RCE via Crafted Request","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-8633-websphere-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-8633","version":"https://jsonfeed.org/version/1.1"}