CVE-2025-66515

Nextcloud Approval app allows users to request approval for other users file

LOW
2.7
CVSS Score
Published: December 5, 2025 at 05:37 PM UTC
Updated: October 15, 2026 at 09:10 PM UTC
2 products affected across 1 vendorApprovalsecurity-advisories

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Severity
LOW2.7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

The Nextcloud Approval app allows approval or disapproval of files in the sidebar. Prior to 1.3.1 and 2.5.0, an authenticated user listed as a requester in a workflow can set another user’s file into the “pending approval” without access to the file by using the numeric file id. This vulnerability is fixed in 1.3.1 and 2.5.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
1.0.0 ≤ v < 1.3.12.0.0 ≤ v < 2.5.0

References (4)

x_refsource_MISCIssue Tracking
Source: cverecord
https://github.com/nextcloud/approval/pull/334
x_refsource_MISCIssue TrackingVendor Advisory
Source: cverecord
https://hackerone.com/reports/3338748

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.7LOWGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-287

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