CVE-2026-45275

6.5 MEDIUM

Nextcloud is an open source content collaboration platform

Published: 2026-06-01 · Last updated: 2026-06-03

Severity and scoring

CVSS: 6.5 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE: CWE-285

Affected products

Vendor	Product
nextcloud	approval

Description

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-45275
[Patch]https://github.com/nextcloud/approval/pull/392
[Vendor advisory]https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v8q8-w6c3-3gv9
[Other]https://hackerone.com/reports/3593780

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CVE-2026-45810 — Nextcloud is an open source content collaboration platform (6.8 MEDIUM)
CVE-2026-45722 — Nextcloud is an open source content collaboration platform (7.1 HIGH)
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CVE-2026-45690 — Nextcloud is an open source content collaboration platform (5.9 MEDIUM)
CVE-2026-45545 — Nextcloud is an open source content collaboration platform (8.2 HIGH)

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