{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/vendors/senior/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Rubiweb (6.2.34.28)","Rubiweb (6.2.34.37)"],"_cs_severities":["high"],"_cs_tags":[],"_cs_type":"advisory","_cs_vendors":["Senior"],"content_html":"\u003cp\u003eCVE-2019-19550 is an authentication bypass vulnerability affecting Senior Rubiweb versions 6.2.34.28 and 6.2.34.37. The flaw exists in the application's connector component, which fails to properly enforce access controls on certain administrative actions. An unauthenticated remote attacker can leverage this by sending crafted HTTP requests to the /rubiweb/conector endpoint. Successful exploitation grants the attacker access to sensitive information and administrative functions that are intended to be restricted to authorized personnel. Given that functional exploit patterns have been published, organizations utilizing these versions of Rubiweb are at an increased risk of unauthorized data exposure and potential administrative compromise.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker performs reconnaissance to identify internet-facing instances of the Senior Rubiweb application by checking the standard /rubiweb/ portal.\u003c/li\u003e\n\u003cli\u003eAttacker confirms the version of the Rubiweb instance to determine if it is vulnerable to CVE-2019-19550.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious HTTP GET request targeting the /rubiweb/conector endpoint.\u003c/li\u003e\n\u003cli\u003eAttacker includes specific parameters such as ACAO=EXESENHA\u0026amp;SIS=FP\u0026amp;LOGINKIND=1 to bypass the application's authentication layer.\u003c/li\u003e\n\u003cli\u003eThe vulnerable server processes the request without validating the session or credentials.\u003c/li\u003e\n\u003cli\u003eThe server returns sensitive information or provides access to the targeted administrative function to the attacker.\u003c/li\u003e\n\u003cli\u003eAttacker extracts sensitive data from the unauthorized administrative responses.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2019-19550 results in unauthorized access to sensitive information stored within the Senior Rubiweb application. This impacts the confidentiality of the application data and allows an attacker to interact with administrative interfaces without valid credentials, potentially leading to further compromise of the affected environment.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePatch Senior Rubiweb to the latest supported version to mitigate CVE-2019-19550.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule below to detect attempts to access the vulnerable connector endpoint without valid authorization.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for HTTP requests directed at /rubiweb/conector containing sensitive query parameters.\u003c/li\u003e\n\u003cli\u003eRestrict access to the Rubiweb administrative interface to known, trusted IP addresses at the network perimeter.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-07-30T07:16:50Z","date_published":"2026-07-30T07:16:50Z","id":"https://feed.craftedsignal.io/briefs/2026-07-rubiweb-auth-bypass/","summary":"Senior Rubiweb versions 6.2.34.28 and 6.2.34.37 contain an authentication bypass vulnerability (CVE-2019-19550) allowing remote, unauthenticated attackers to access administrative functions and sensitive system information via specifically crafted HTTP requests.","title":"Authentication Bypass and Information Disclosure in Senior Rubiweb","url":"https://feed.craftedsignal.io/briefs/2026-07-rubiweb-auth-bypass/"}],"language":"en","title":"CraftedSignal Threat Feed - Senior","version":"https://jsonfeed.org/version/1.1"}