PT-2026-45535 · Nextcloud · Security-Advisories

Côme Chilliet + 1 · Publicado 2026-06-01 · Atualizado 2026-06-01 · CVE-2026-45691

NVD

CVSS v3.1

5.9

Média

Vetor base

AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

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

Correção

Improper Authentication

Enumeração de Fraquezas

CWE-287

Identificadores relacionados

CVE-2026-45691

Produtos afetados

Security-Advisories

Referências · 4

• https://github.com/nextcloud/server/pull/59758 · Nota
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mp6x-g55j-w9jw · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-45691 · Nota de Segurança
• https://hackerone.com/reports/3573399 · Nota