Vulnerability Report

CVE-2026-45275

Title: Approval app privilege escalation

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2026-45275.

CWE Category CWE-285

Published Date Jun 01, 2026

Modified Date Jul 22, 2026

Exploit Status Not Found

Score 6.5 CVSS v3.1

Exploit Probability (EPSS)

0.49%

Vulnerability Summary

CVE-2026-45275: Nextcloud is an open source content collaboration platform. Prior to version 2.7.2, a privilege escalation vulnerability exists in the Approval app that allows a user without sharing permissions to force the system to share a file with approvers. This results in an authorization bypass and privilege escalation, allowing unauthorized distribution of restricted files. This issue has been patched in version 2.7.2.

Impacted Vendors

nextcloud 1

Reference Links

https://github.com/nextcloud/approval/pull/392 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v8q8-w6c3-3gv9 https://hackerone.com/reports/3593780

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-45275 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

July 22, 2026 MODIFIED

Vulnerability data updated via NVD.

June 03, 2026 MODIFIED

Vulnerability data updated via NVD.

June 02, 2026 MODIFIED

Vulnerability data updated via NVD.

June 01, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.