VYPR
← All advisories
Medium severity5.9NVD Advisory· Published Jun 1, 2026· Updated Jun 4, 2026

CVE-2026-45691

CVE-2026-45691

Description

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

5
  • Nextcloud/Serverreferences3 versions
    (expand)+ 2 more
    • (no CPE)
    • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*range: >=32.0.0,<32.0.9
    • cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*range: >=29.0.0,<29.0.16.16
  • Nextcloud/Nextcloud Enterprise Serverllm-fuzzy
    Range: >=32.0.0,<32.0.9, >=33.0.0,<33.0.3
  • osv-coords
    pkg:bitnami/nextcloud
    Range: >= 32.0.0, < 32.0.9

Patches

Vulnerability mechanics

References

3

News mentions

1