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TI-2026-37958 Aliases CVE-2026-52853

Docmost: Privilege Escalation - ADMIN Can Invite Users as OWNER

Priority LOW 23CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

Docmost is open-source collaborative wiki and documentation software. Prior to 0.90.1, an authenticated workspace ADMIN can use the workspace invitation flow to invite an external email address with the OWNER role because the role ceiling does not prevent ADMIN users from granting privileges above their own. When the invitation is accepted, the new account receives OWNER-level permissions, allowing the ADMIN to create a backdoor OWNER account or promote a colluding external user to the workspace's highest privilege level. This issue is fixed in version 0.90.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00207 10th percentileScored 2026-11-07
Fix Fixed docmost (docmost): 0.90.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
docmostdocmostbefore 0.90.10.90.1Patch availableCNA
  • docmost Vendordocmost Affected before 0.90.1 Fixed in 0.90.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:docmost:docmost:*:*:*:*:*:*:*:*——docmost
  • cpe:2.3:a:docmost:docmost:*:*:*:*:*:*:*:* Versions — — ·docmost

Remediation

  • Fix · CNA docmost (docmost) Fixed in 0.90.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-52853
  2. 2026-10-05 CISA SSVC decision points changed

References

Other 4

  • TI-2026-17859 Docmost affected by an Arbitrary File Write via Zip Import Feature (ZipSlip) CVSS 3.1CRITICAL 9.8
  • TI-2026-19373 Docmost Affected by Stored XSS in Public Share Page CVSS 3.1HIGH 7.3
  • TI-2025-35043 Cross Site Scripting vulnerability in docmost v.0.21.0 and before allows an attacker to execute arbitrary code CVSS 3.1MEDIUM 6.1
  • TI-2026-35511 Docmost: Avatar URL path traversal in avatar cleanup leads to arbitrary local file deletion CVSS 3.1HIGH 7.1
  • TI-2026-35513 Docmost: Public image fileName path traversal leads to unauthorized local file read CVSS 3.1MEDIUM 5.3
  • TI-2026-46906 Docmost: Unbounded ZIP decompression (zip-bomb) in page import allows denial of service CVSS 3.1MEDIUM 6.5
See all 14 →

Sources

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