{"cve":"CVE-2026-110623","nvd":{"published":"2026-10-14T15:17:14.833","modified":"2026-10-16T18:17:32.670","status":"Deferred","description":"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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-862"],"references":["https://github.com/papermerge/papermerge-core/blob/3.5.3/papermerge/core/features/shared_nodes/router.py#L78-L150","https://github.com/papermerge/papermerge-core/commit/0fd469102b05b5ebeb5ee39b3f73ff76991ab269","https://github.com/papermerge/papermerge-core/issues/1290","https://github.com/papermerge/papermerge-core/issues/1291","https://www.vulncheck.com/advisories/papermerge-core-through-3.5.3-missing-authorization-in-shared-nodes-api"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:59:28.494260111+00:00"},"epss":{"cve":"CVE-2026-110623","score":0.00499,"percentile":0.42462,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}