CVE-2025-66557

MEDIUM EPSS 14.0%
Published Dec 5, 20256mo ago · Modified Jun 17, 20262w ago
4.3 CVSS 3.1
Medium
Find Similar
Published Dec 5, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

Description

Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with "Can share" permission to modify the permissions of other recipients. This vulnerability is fixed in 1.14.6 and 1.15.2.

CVSS Details

Base Score
4.3
Exploitability
2.8
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
14.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-284

Affected Products 2

VendorProductVersionRange
nextclouddeck*≥1.14.0  –  <1.14.6
nextclouddeck*≥1.15.0  –  <1.15.2

References 4

  • github.com https://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae
    Patch
  • github.com https://github.com/nextcloud/deck/pull/7131
    Issue TrackingPatch
  • github.com https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv
    PatchVendor Advisory
  • hackerone.com https://hackerone.com/reports/3247499
    Issue TrackingVendor Advisory

Remediation

  • github.com https://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae
    Patch
  • github.com https://github.com/nextcloud/deck/pull/7131
    Issue TrackingPatch
  • github.com https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv
    PatchVendor Advisory