{"schema":"threatline.record/2","record":{"id":"CVE-2026-110623","aliases":[],"summary":"Papermerge Core through 3.5.3 Missing Authorization in Shared Nodes API","details":"Papermerge Core through 3.5.3 contains a missing authorization vulnerability in the shared nodes API that allows authenticated users to share other users' documents by supplying arbitrary node UUIDs. Attackers can call POST /shared-nodes or PATCH /shared-nodes/access/{node_id} to grant themselves any role, then read, modify, or delete victims' documents and revoke existing shares.","categories":["Unclassified"],"product":"papermerge-core","vendor":"papermerge","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110623","source_modified_at":"2026-10-16T17:16:11.037Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"papermerge-core","vendor":"papermerge","versions":[{"version":"0","lessThanOrEqual":"3.5.3","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":7.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00499,"percentile":0.41878,"score_date":"2026-10-23"},"published_at":"2026-10-14T14:16:59.957Z","modified_at":"2026-10-16T17:16:11.037Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110623","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T17:16:11.037Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110623","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/papermerge/papermerge-core/issues/1290","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/papermerge/papermerge-core/issues/1291","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/papermerge/papermerge-core/blob/3.5.3/papermerge/core/features/shared_nodes/router.py#L78-L150","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/papermerge/papermerge-core/commit/0fd469102b05b5ebeb5ee39b3f73ff76991ab269","tags":["patch"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/papermerge-core-through-3.5.3-missing-authorization-in-shared-nodes-api","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":"total","assessed_at":"2026-10-16T16:35:42.242876Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T17:16:11.037Z","content_hash":"c1eb501decb9d2f5673ac4f118db491be2d067ee0f5a9e5bffa31a0025d863f7"}}