CVE-2026-45285

Nextcloud is an open source content collaboration platform. From versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a user shares a folder or file with a Nextcloud Team that includes an external member (a person added via email address who does not have a Nextcloud account), the system automatically creates a public link for that external member. This public link is not displayed in the share section of the folder, so the folder owner has no knowledge of its existence. It is sent via email to the external member. It grants the same permissions (read, write, delete, reshare, download) as the Team’s access. An attacker who receives or intercepts this link can access, modify, delete, reshare, and download all data in the shared folder without any further authentication. The folder owner cannot see or revoke the link through the normal sharing interface. This issue has been patched in versions 32.0.9 and 33.0.3.

• CWE-862

• https://github.com/nextcloud/circles/pull/2454Issue Tracking, Patch
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r3xh-x86g-hw4mVendor Advisory
• https://hackerone.com/reports/3625932Permissions Required

Published

Jun 1, 2026

Last Modified

Jul 22, 2026

Status

Analyzed

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-45279Nextcloud is an open source content collaboration platform. …6.5
• CVE-2026-4528A vulnerability was determined in trueleaf ApiFlow 0.9.7. Th…7.3
• CVE-2026-45281Nextcloud is an open source content collaboration platform. …8.1
• CVE-2026-45282Nextcloud is an open source content collaboration platform. …6.5
• CVE-2026-45283Nextcloud is an open source content collaboration platform. …4.3
• CVE-2026-45284Nextcloud is an open source content collaboration platform. …8.8
• CVE-2026-45286Nextcloud is an open source content collaboration platform. …4.3
• CVE-2026-45287OpenTelemetry-Go is the Go implementation of OpenTelemetry. …5.5
• CVE-2026-45288Marten is a .NET Transactional Document DB and Event Store o…9.8
• CVE-2026-45289CloudburstMC Protocol is a protocol library for Minecraft Be…5.3
• CVE-2026-4529A vulnerability was identified in D-Link DHP-1320 1.00WWB04.…8.8
• CVE-2026-45290Cloudburst Network provides network components used within C…7.5