{"schema":"threatline.record/2","record":{"id":"CVE-2026-108711","aliases":[],"summary":"Plastic Labs Honcho through 3.3.0 Incorrect Authorization via POST /v3/workspaces","details":"Plastic Labs Honcho through 3.3.0 contains an incorrect authorization vulnerability that allows peer- or session-scoped API key holders to read workspace data because get_or_create_workspace checks only the workspace claim. Attackers can submit their parent workspace name to the POST /v3/workspaces endpoint to retrieve workspace metadata and configuration, including custom_instructions, reserved for workspace or admin keys.","categories":["Unclassified"],"product":"honcho","vendor":"Plastic Labs","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-108711","source_modified_at":"2026-10-13T17:01:29.798Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"honcho","vendor":"Plastic Labs","versions":[{"version":"0","lessThanOrEqual":"3.3.0","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00277,"percentile":0.1913,"score_date":"2026-10-23"},"published_at":"2026-10-11T12:19:25.400Z","modified_at":"2026-10-13T17:01:29.798Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-108711","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-13T17:01:29.798Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-108711","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/@haind/honcho-scoped-jwt-workspace-config-disclosure","tags":["third-party-advisory"]},{"source":"CVE List","url":"https://github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/routers/workspaces.py#L41-L72","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/security.py#L218-L225","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/crud/workspace.py#L112-L119","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/plastic-labs/honcho","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/plastic-labs-honcho-through-3.3.0-incorrect-authorization-via-post-v3-workspaces","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-13T15:49:42.424749Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-13T17:01:29.798Z","content_hash":"755989cbfc793a0c078904ca8a9ed9d37fd908f5976962cddb840dcd01081785"}}