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TI-2023-08718 Aliases CVE-2023-22469

Nextcloud Deck card vulnerable to data leak to unauthorized users via reference preview cache

Priority MEDIUM 59CWE-922Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-922.

Summary

Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. When getting the reference preview for Deck cards the user has no access to, unauthorized user could eventually get the cached data of a user that has access. There are currently no known workarounds. It is recommended that the Nextcloud app Deck is upgraded to 1.8.2.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00707 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed security-advisories (nextcloud): 1.8.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
nextcloudsecurity-advisoriesbefore 1.8.21.8.2Patch availableCNA
  • security-advisories Vendornextcloud Affected before 1.8.2 Fixed in 1.8.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nextcloud:deck:*:*:*:*:*:*:*:*before 1.8.2Vulnerablenextcloud
  • cpe:2.3:a:nextcloud:deck:*:*:*:*:*:*:*:* Versions before 1.8.2 Vulnerable ·nextcloud

Remediation

  • Fix · CNA security-advisories (nextcloud) Fixed in 1.8.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-22469

References

Exploit 1

Patch 1

  • 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-2020-06600 Improper access control in Nextcloud Deck CVSS 3.1HIGH 8.0
  • 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