8.1Yüksek

CVE-2026-45281Nextcloud: Cross-Account Calendar Takeover via Unauthorized Group-Member-Set Update

nextcloud security-advisories Yayım: (5 ay önce)

Açıklama

Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, with the knowledge of other users’ principal URL an attacker could possibly send a request to gain full access to their calendar. Therefore, the attacker must be an authenticated user. This is because of improper authorization controls in the backend of the calendar. If the attacker had access to the calendar, they would be able to view and modify it. It is recommended that the Nextcloud Server is upgraded to 33.0.3 or 32.0.9. It is recommended that the Nextcloud Enterprise Server is upgraded to 33.0.3, 32.0.9, 31.0.14.5, 30.0.17.9, 29.0.16.16, 28.0.14.17, 27.1.11.26, 26.0.13.26, 25.0.13.29, 24.0.12.34, 23.0.12.35, 22.2.10.39, or 21.0.9.23

Zayıflık türü (CWE): CWE-639

Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.

Etkilenen ürünler ve sürümler

ÜreticiÜrünSürümler
nextcloud nextcloud server 32.0.0 – < 32.0.9
nextcloud security-advisories >= 32.0.0, < 32.0.9, >= 33.0.0, < 33.0.3

Kaynaklar ve yamalar

CPE eşleşmeleri (NVD) (15)

  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* ≥ 32.0.0 < 32.0.9
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* ≥ 33.0.0 < 33.0.3
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 21.0.0 < 21.0.9.23
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 22.0.0 < 22.2.10.39
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 23.0.0 < 23.0.12.35
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 24.0.0 < 24.0.12.34
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 25.0.0 < 25.0.13.29
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 26.0.0 < 26.0.13.26
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 27.0.0 < 27.1.11.26
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 28.0.0 < 28.0.14.17
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 29.0.0 < 29.0.16.16
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 30.0.0 < 30.0.17.9
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 31.0.0 < 31.0.14.5
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 32.0.0 < 32.0.9
  • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* ≥ 33.0.0 < 33.0.3