{"id":"CVE-2026-105139","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-105139","generatedAt":"2026-10-28T10:48:19.967Z","title":"Obot 0.26.0 before 0.26.2 contains an authorization bypass vulnerability that allows authenticated users matching any vMCP profile to reach prompts and resources of ungranted components.","description":"Obot 0.26.0 before 0.26.2 contains an authorization bypass vulnerability that allows authenticated users matching any vMCP profile to reach prompts and resources of ungranted components. Because profiles were enforced only on tools, attackers can access prompts, resources, and resource templates through the vMCP owner's shared component connection.","published":"2026-10-07T13:17:19.000Z","lastModified":"2026-10-07T15:17:06.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":5.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-863"],"affected":[],"epss":{"score":0.00234,"percentile":0.14215,"date":"2026-10-27","history":[{"date":"2026-10-08","score":0.00234,"percentile":0.13109}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-07T13:17:19.000Z","detail":{"score":"5.3","severity":"MEDIUM","publishedAt":"2026-10-07T13:17:19.303Z"},"summary":"New CVE, medium severity (CVSS 5.3)."}],"references":[{"url":"https://github.com/obot-platform/obot","source":"disclosure@vulncheck.com"},{"url":"https://github.com/obot-platform/obot/blob/8cfac5d38baa4fa0719e7975b7542608ff8bc932/pkg/mcp/vmcp.go#L231","source":"disclosure@vulncheck.com"},{"url":"https://github.com/obot-platform/obot/blob/8cfac5d38baa4fa0719e7975b7542608ff8bc932/pkg/mcp/vmcp.go#L97","source":"disclosure@vulncheck.com"},{"url":"https://github.com/obot-platform/obot/commit/8d92701c2018a7b9dd6d692498fa5f41fdb912ea","source":"disclosure@vulncheck.com"},{"url":"https://github.com/obot-platform/obot/releases/tag/v0.26.2","source":"disclosure@vulncheck.com"},{"url":"https://github.com/obot-platform/obot/security/advisories/GHSA-xhpw-65qw-wj6m","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/obot-0.26.0-before-0.26.2-authorization-bypass-via-vmcp-profile-prompts-and-resources","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-105139","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}