{"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/tags/cve-2026-107186/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":8.6,"id":"CVE-2026-107186"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["vulnerability","authentication-bypass","web-security","cve-2026-107186"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eCVE-2026-107186 is a critical authentication bypass vulnerability affecting Direct Web Remoting (DWR) implementations. An unauthenticated attacker can exploit the way the application processes multiple method calls within a single DWR request. By crafting a request that specifies 'isPasswordUppercase' as the initial call method followed by a second, unauthorized method intended for workflow rule execution, the attacker can force the backend to perform administrative actions. This flaw allows for unauthorized workflow execution without requiring valid credentials. Because this manipulation occurs at the application request level, it bypasses standard session validation logic. The impact is significant as it provides a pathway for unauthenticated remote code execution or business logic manipulation, depending on the capabilities of the accessible workflow rules.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies an internet-facing endpoint utilizing the DWR framework for AJAX remoting.\u003c/li\u003e\n\u003cli\u003eAttacker prepares a DWR-formatted HTTP POST request targeting the application remoting gateway.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a batch request containing multiple call methods.\u003c/li\u003e\n\u003cli\u003eThe first method is set to 'isPasswordUppercase', which the application processes as an unauthenticated or public method.\u003c/li\u003e\n\u003cli\u003eThe second call method is set to an administrative workflow rule execution function.\u003c/li\u003e\n\u003cli\u003eThe backend application fails to validate authentication status for the subsequent chained method call.\u003c/li\u003e\n\u003cli\u003eThe application executes the requested workflow rule with the context of the internal system.\u003c/li\u003e\n\u003cli\u003eAttacker achieves unauthorized execution of business logic or administrative functions.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation allows an unauthenticated remote attacker to execute arbitrary workflow rules. This can lead to unauthorized modification of business data, elevation of privileges, or the execution of system-level commands, depending on the configured workflow rules. The impact is assessed as high given the potential for complete compromise of application integrity.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAudit web server and application logs for DWR requests containing chained method calls.\u003c/li\u003e\n\u003cli\u003eImplement strict input validation on all DWR gateways to ensure that chained calls are authenticated per-method, rather than inheriting authentication context from a previous call.\u003c/li\u003e\n\u003cli\u003eRestrict access to administrative or sensitive workflow rule execution endpoints to ensure they are not accessible via standard remoting gateways.\u003c/li\u003e\n\u003c/ol\u003e\n","date_modified":"2026-10-19T18:11:47Z","date_published":"2026-10-19T18:11:47Z","id":"https://feed.craftedsignal.io/briefs/2026-10-dwr-workflow-bypass/","summary":"An unauthenticated vulnerability in DWR request processing allows attackers to execute arbitrary workflow rules by chaining method calls.","title":"Unauthenticated Workflow Rule Execution via DWR Request Chaining","url":"https://feed.craftedsignal.io/briefs/2026-10-dwr-workflow-bypass/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-107186","version":"https://jsonfeed.org/version/1.1"}