{"schema":"threatline.record/2","record":{"id":"CVE-2026-110611","aliases":[],"summary":"REBUILD through 4.5.0 Authorization Bypass via aibot2 Chat Endpoints chatid","details":"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.","categories":["Unclassified"],"product":"rebuild","vendor":"getrebuild","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110611","source_modified_at":"2026-10-20T01:10:36.770Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"rebuild","vendor":"getrebuild","versions":[{"version":"0","lessThanOrEqual":"4.5.0","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":6,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00339,"percentile":0.26106,"score_date":"2026-10-23"},"published_at":"2026-10-14T14:16:51.948Z","modified_at":"2026-10-20T01:10:36.770Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110611","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T01:10:36.770Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110611","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/getrebuild-rebuild-aibot-chat-idor","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/getrebuild/rebuild/blob/48c6cc42f9c331cc57c057fa9c66d6cbda990131/src/main/java/com/rebuild/web/aibot/AiBot2Controller.java#L151-L203","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/getrebuild/rebuild/blob/48c6cc42f9c331cc57c057fa9c66d6cbda990131/src/main/java/com/rebuild/core/aibot2/ChatManager.java#L99-L101","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/rebuild-through-4.5.0-authorization-bypass-via-aibot2-chat-endpoints-chatid","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-20T01:08:37.024887Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-20T01:10:36.770Z","content_hash":"1d541979336cebf360effe9d3adffb877cab13b89b672484070d5e207e20d967"}}