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TI-2026-74117 Aliases CVE-2026-110623GHSA-w6cv-8rwh-jrfj

Missing authorization in Papermerge Core shared nodes API

Priority LOW 36CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Papermerge Core through 3.5.3 has a missing authorization flaw in its shared nodes API (CWE-862). Authenticated users can share other users' documents by supplying arbitrary node UUIDs and grant themselves any role. An attacker can then read, modify, or delete victims' documents and revoke existing shares.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00499 43rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
papermergepapermerge-coreup to 3.5.3—No fix listedCNA
  • papermerge-core Vendorpapermerge Affected up to 3.5.3 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for papermerge-core.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-110623
  2. 2026-10-14 Alias added: GHSA-w6cv-8rwh-jrfj
  3. 2026-10-16 Priority changed: MEDIUM → LOW
  4. 2026-10-16 CISA SSVC decision points changed

References

Patch 1

Other 3

  • TI-2026-67734 Path traversal in Papermerge upload API allows remote code execution CVSS 3.1HIGH 7.5
  • TI-2025-09371 Papermerge DMS Authorization Token improper authorization CVSS 4.0MEDIUM 5.3
  • TI-2026-74116 Missing authorization in Papermerge Core page management and OCR CVSS 4.0HIGH 7.7
  • TI-2020-17690 Multiple cross-site scripting (XSS) vulnerabilities in Papermerge before 1.5.2 allow… CVSS 3.1MEDIUM 6.1
  • TI-2026-74118 Missing authorization in Papermerge Core exposes other groups' tags CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences