Abusing the federated share endpoint, an attacker can write arbitrary rows into the oc_share_external database table. These rows persist indefinitely — there is no automatic cleanup mechanism. Three distinct denial-of-service conditions follow from this write…
CVE-2026-45691Nextcloud: Bypass of second factor authentication on DAV endpoints
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, a pre-2FA session cookie (created after successful password authentication but before TOTP completion) could be reused as a Bearer token to authenticate against DAV endpoints, granting read/write access and bypassing mandatory two-factor authentication. 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 or 29.0.16.16
Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.
Etkilenen ürünler ve sürümler
| Üretici | Ürün | Sürümler | |
|---|---|---|---|
| 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) (7)
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*≥ 32.0.0 < 32.0.9cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*≥ 33.0.0 < 33.0.3cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*≥ 29.0.0 < 29.0.16.16cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*≥ 30.0.0 < 30.0.17.9cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*≥ 31.0.0 < 31.0.14.5cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*≥ 32.0.0 < 32.0.9cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*≥ 33.0.0 < 33.0.3