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TI-2026-81401 Aliases CVE-2026-82986

Nextcloud Tables users can bypass group limits on share links

Priority LOW 20CWE-284Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Nextcloud Tables from 0.6.4 through 1.0.0 is affected. A user in a group can bypass the link sharing restriction that an administrator set for that group and create share links for a table without the required permission (CWE-284). Exploitation needs a low-privileged account and user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

The user in a group can bypass the group restriction set by an administrator on link sharing, creating share links for a table even though they shouldn't have that permission.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00168 6th 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
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
nextcloudTables0.6.4 – 1.0.0—No fix listedCNA
  • Tables Vendornextcloud Affected 0.6.4 – 1.0.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Nextcloud Tables.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-82986
  2. 2026-11-04 CISA SSVC decision points changed

References

Other 1

  • TI-2026-18211 Windmill < 1.615.0 Operator Role Missing Authorization Checks RCE CVSS 4.0HIGH 8.7
  • TI-2023-14838 NextCloud Cookbook's pull-checks.yml workflow is vulnerable to OS Command Injection CVSS 3.1HIGH 8.8
  • TI-2022-08650 Command Injection in Appointment Emails for Nextcloud Calendar CVSS 3.1CRITICAL 9.8
  • TI-2023-20855 Users can delete external storage mount points CVSS 3.1HIGH 7.7
  • TI-2023-11091 Nextcloud download permissions can be changed by resharer CVSS 3.1HIGH 7.5
  • TI-2023-10624 Nextcloud Server vulnerable to SSRF via filter bypass due to lax checking on IPs CVSS 3.1MEDIUM 5.3
See all 401 →

Sources

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