{"id":"CVE-2026-108711","revision":"8bc28546ae0f41b2ab3662d8d4bbf5fd","records":[{"revision":"8bc28546ae0f41b2ab3662d8d4bbf5fd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-108711","aliases":[],"title":"Plastic Labs Honcho through 3.3.0 Incorrect Authorization via POST /v3/workspaces","description":"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.","state":0,"publishedAt":"2026-10-11T12:19:25.4+00:00","modifiedAt":"2026-10-13T17:01:29.798+00:00","affected":[{"ecosystem":"Vendor product","name":"honcho","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Plastic Labs\",\n                    \"product\": \"honcho\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"3.3.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/plastic-labs/honcho\",\n                    \"repo\": \"https://github.com/plastic-labs/honcho\"\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":5.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3,"severity":"MEDIUM"}],"references":["https://hackmd.io/@haind/honcho-scoped-jwt-workspace-config-disclosure","https://github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/routers/workspaces.py#L41-L72","https://github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/security.py#L218-L225","https://github.com/plastic-labs/honcho/blob/608aec8a928da13c540262ed980c569448fb53ab/src/crud/workspace.py#L112-L119","https://github.com/plastic-labs/honcho","https://www.vulncheck.com/advisories/plastic-labs-honcho-through-3.3.0-incorrect-authorization-via-post-v3-workspaces"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108711","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-108711","identifiers":["CVE-2026-108711"]},"retained":false,"historicalAffected":[]}],"coverage":[]}