CVE-2026-110623
CVE-2026-110623
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Weakness classification (CWE)
References
- github.com/papermerge/papermerge-core/issues/1290 (issue-tracking)
- github.com/papermerge/papermerge-core/issues/1291 (issue-tracking)
- github.com/papermerge/papermerge-core/blob/3.5.3/papermerge/core/features/share… (technical-description)
- github.com/papermerge/papermerge-core/commit/0fd469102b05b5ebeb5ee39b3f73ff7699… (patch)
- www.vulncheck.com/advisories/papermerge-core-through-3.5.3-missing-authorizatio… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110623?
- CVE-2026-110623 is a high-severity vulnerability, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-10-14.
- How severe is CVE-2026-110623?
- High severity. CVSS v3 base score is 7.5 out of 10.