UpHeron
All vulnerabilities

Servers and applications

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 authenticate against DAV endpoints, granting read/write access and bypassing mandatory two-factor…

Severity
Medium 5.9
Published
1 Jun 2026
Last changed
22 Jul 2026
Added to UpHeron
21 Oct 2026
Fixed in
29.0.16.16, 30.0.17.9, 31.0.14.5, 32.0.9, 33.0.3
Sources
NVD

Affected software

SoftwareAffected versions
NextcloudServers and applications · cpe:a:nextcloud:nextcloud_server
  • From 29.0.0 before 29.0.16.16
  • From 30.0.0 before 30.0.17.9
  • From 31.0.0 before 31.0.14.5
  • From 32.0.0 before 32.0.9
  • From 33.0.0 before 33.0.3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-45691
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-45691