What’s Vulnerable › Vulnerabilities

CVE-2023-22469: Nextcloud Deck card vulnerable to data leak to unauthorized users via reference preview cache

• Severity: low (CVSS 3.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-10 · updated 2026-06-17
• Weakness: CWE-922

Description

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.

Affected products

• Nextcloud Deck: before 1.8.2 — fixed in 1.8.2

How to fix

Upgrade to a fixed version: Nextcloud Deck 1.8.2. Check the vendor advisory for mitigations.

References

• https://github.com/nextcloud/deck/pull/4196
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8fjp-w9gp-j5hq
• https://github.com/nextcloud/deck/pull/4196
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8fjp-w9gp-j5hq

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