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TI-2020-06600 Aliases CVE-2020-8182GHSA-9fvc-qpfc-hjxh

Improper access control in Nextcloud Deck

Priority LOW 37CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284.

Summary

Improper access control in Nextcloud Deck 0.8.0 allowed an attacker to reshare boards shared with them with more permissions than they had themselves.

Why it matters now

EPSS 0.01035 64th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Nextcloud DeckFixed in 0.8.1—No fix listedCNA
  • Nextcloud Deck Vendor— Affected Fixed in 0.8.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nextcloud:deck:0.8.0:*:*:*:*:*:*:*0.8.0Vulnerablenextcloud
  • cpe:2.3:a:nextcloud:deck:0.8.0:*:*:*:*:*:*:* Versions 0.8.0 Vulnerable ·nextcloud

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-8182
  2. 2026-10-03 Alias added: GHSA-9fvc-qpfc-hjxh

References

Exploit 1

Advisory 1

  • TI-2023-08718 Nextcloud Deck card vulnerable to data leak to unauthorized users via reference preview cache CVSS 3.1MEDIUM 5.8
  • TI-2022-11703 Possibility for anyone to add a stack with existing tasks on anyone's board in Nextcloud Deck CVSS 3.1MEDIUM 5.0
  • TI-2022-08716 Error in deleting deck cards attachment reveals the full application path in Nextcloud Deck CVSS 3.1MEDIUM 4.3
  • TI-2021-16610 Missing permission check on Deck API CVSS 3.1HIGH 8.1
  • TI-2021-05774 Information disclosure in Nextcloud Deck CVSS 3.1MEDIUM 6.5
  • TI-2021-15506 Circle can be accessed by non-Circle members in Nextcloud Deck CVSS 3.1MEDIUM 6.5
See all 16 →

Sources

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