{"id":"CVE-2026-110611","revision":"25dc54943c754269ba0523c46ee358a0","records":[{"revision":"25dc54943c754269ba0523c46ee358a0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-110611","aliases":[],"title":"REBUILD through 4.5.0 Authorization Bypass via aibot2 Chat Endpoints chatid","description":"REBUILD through 4.5.0 contains an authorization bypass vulnerability in AiBot2Controller /aibot2 endpoints that act on a caller-supplied chatid without verifying ownership. Authenticated low-privilege users can supply another user's chatid to chat-init, chat-delete, chat-feedback, or chat-stream-stop to read, delete, exfiltrate, or interrupt AI assistant conversations.","state":0,"publishedAt":"2026-10-14T14:16:51.948+00:00","modifiedAt":"2026-10-20T01:10:36.77+00:00","affected":[{"ecosystem":"https://github.com","name":"rebuild","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"getrebuild\",\n                    \"product\": \"rebuild\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"4.5.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/getrebuild/rebuild\",\n                    \"collectionURL\": \"https://github.com\",\n                    \"repo\": \"https://github.com/getrebuild/rebuild\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","score":6,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N","score":5.9,"severity":"MEDIUM"}],"references":["https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/getrebuild-rebuild-aibot-chat-idor","https://github.com/getrebuild/rebuild/blob/48c6cc42f9c331cc57c057fa9c66d6cbda990131/src/main/java/com/rebuild/web/aibot/AiBot2Controller.java#L151-L203","https://github.com/getrebuild/rebuild/blob/48c6cc42f9c331cc57c057fa9c66d6cbda990131/src/main/java/com/rebuild/core/aibot2/ChatManager.java#L99-L101","https://www.vulncheck.com/advisories/rebuild-through-4.5.0-authorization-bypass-via-aibot2-chat-endpoints-chatid"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110611","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-110611","identifiers":["CVE-2026-110611"]},"retained":false,"historicalAffected":[]}],"coverage":[]}