CVE-2026-110623
Papermerge Core through 3.5.3 Missing Authorization in Shared Nodes API
- State
- Published
- Severity
- 7.7 High
- Published
- Oct 14, 2026
- Updated
- Oct 16, 2026
- Reserved
- Oct 14, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
papermerge-corepapermerge |
|
References
- https://github.com/papermerge/papermerge-core/issues/1290issue-tracking
- https://github.com/papermerge/papermerge-core/issues/1291issue-tracking
- https://github.com/papermerge/papermerge-core/blob/3.5.3/papermerge/core/features/shared_nodes/router.py#L78-L150technical-description
- https://github.com/papermerge/papermerge-core/commit/0fd469102b05b5ebeb5ee39b3f73ff76991ab269patch
- VulnCheck Advisory: Papermerge Core through 3.5.3 Missing Authorization in Shared Nodes APIthird-party-advisory
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