CVE-2026-45691

A flaw was found in Nextcloud Server. An attacker could reuse a pre-two-factor authentication 2FA session cookie as a Bearer token. This allows them to authenticate against DAV endpoints, granting unauthorized read and write access and bypassing the mandatory two-factor authentication. Mitigation...

CVE-2026-45690

A flaw was found in Nextcloud Server. This vulnerability allows a remote attacker, with knowledge of a user's password, to bypass two-factor authentication 2FA protections. When a user attempts to log in with valid credentials on a 2FA-enabled account, a temporary session token is generated befor...

CVE-2026-45690

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, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication 2FA protections...

CVE-2026-45691

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 authenticat...

CVE-2026-45691

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 authenticat...

CVE-2026-45691 Nextcloud: Bypass of second factor authentication on DAV endpoints

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 authenticat...

EUVD-2026-33718

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 authenticat...

CVE-2026-45691

Summary: CVE-2026-45691 affects Nextcloud Server prior to 32.0.9 and 33.0.3, where a pre-2FA session cookie created after password auth but before TOTP could be reused as a Bearer token to access DAV endpoints, bypassing mandatory two-factor authentication and granting read/write access. Impact: ...

CVE-2026-45691 Nextcloud: Bypass of second factor authentication on DAV endpoints

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 authenticat...

CVE-2026-45690 Nextcloud: Two-Factor Authentication Bypass via Pending Session Token Replay

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, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication 2FA protections...

CVE-2026-45690

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, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication 2FA protections...

CVE-2026-45690

Nextcloud Server versions 32.0.0–32.0.9 and 33.0.0–33.0.3 expose an authentication bypass where, after valid credentials are entered on a 2FA-enabled account, a temporary session token is created before the second factor is enforced. The token can be extracted and replayed via HTTP Basic Authenti...

EUVD-2026-33716

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, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication 2FA protections...

CVE-2026-45690 Nextcloud: Two-Factor Authentication Bypass via Pending Session Token Replay

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, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication 2FA protections...

Nextcloud Server 授权问题漏洞

NextCloud Server is an open-source NextCloud server program developed by NextCloud. Versions of NextCloud Server from 32.0.0 to 32.0.9 and from 33.0.0 to 33.0.3 contained vulnerabilities related to authorization. These vulnerabilities stemmed from the possibility that the session cookie, which...

Nextcloud Server 授权问题漏洞

NextCloud Server is an open-source NextCloud server program. Versions of NextCloud Server from 32.0.0 to 32.0.9 and from 33.0.0 to 33.0.3 had authorization-related vulnerabilities. These vulnerabilities stemmed from authentication bypasses, allowing attackers who know the user’s password to...

PT-2026-45535

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 authenticat...

PT-2026-45534

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, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication 2FA protections...

CVE-2026-9091

Casdoor versions 2.362.0 and earlier contain a logic flaw in the social‑login binding flow that allows users to bypass configured MFA requirements. The binding‑rule code path in controllers/auth.go calls HandleLoggedIn directly without invoking checkMfaEnable. Any user authenticating via this pat...

CVE-2026-45610

WWBN AVideo is an open source video platform. In 29.0 and earlier, there is a cross-site request forgery vulnerability on the 2FA toggle. plugin/LoginControl/set.json.php accepts POST type=set2FA value=false, calls LoginControl::setUser2FAUser::getId, false on the session-authenticated user, and...