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CVE-2026-110623— Papermerge Core through 3.5.3 Missing Authorization in Shared Nodes API

Quick assessment

Affected
papermerge papermerge-core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Papermerge Core 3.5.3 及更早版本在共享节点 API 中存在一个缺失授权检查的安全漏洞。该漏洞允许已认证的用户通过提供任意节点 UUID，将其他用户的文档共享给他人。攻击者可以调用 POST /shared-nodes 或 PATCH /shared-nodes/access/{node_id} 接口，为自己授予任意角色权限，从而读取、修改或删除受害者的文档，并撤销现有的共享设置。

CVSS 7.5 · High EPSS 0.50% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
papermerge papermerge-core ≤ 3.5.3 affected
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I. Basic Information for CVE-2026-110623

Vulnerability Information
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Vulnerability Title
Papermerge Core through 3.5.3 Missing Authorization in Shared Nodes API
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
papermerge papermerge-core 0 ~ 3.5.3 -

II. Public POCs for CVE-2026-110623

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III. Intelligence Information for CVE-2026-110623

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Patches & Fixes for CVE-2026-110623 (1)

Other References for CVE-2026-110623 (4)

Same Patch Batch · papermerge · 2026-10-14 · 3 CVEs total

CVE-2026-110622 7.5 HIGH Papermerge Core through 3.5.3 Missing Authorization in Page Management and OCR Endpoints
CVE-2026-110624 3.1 LOW Papermerge Core through 3.5.3 Missing Authorization via /tags/all and /document-types/all

IV. Related Vulnerabilities

Same product: papermerge-core
Same vendor: papermerge
Same weakness: CWE-862

V. Comments for CVE-2026-110623

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