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Bypass of second factor authentication on DAV endpoints by reusing a pre-2FA session ID

🗓️ 13 May 2026 06:50:51Reported by NextcloudType 
nextcloud
 nextcloud
🔗 github.com👁 21 Views

Bypass of two-factor authentication on webdav endpoints by reusing a pre authentication session ID.

Related
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-45691
1 Jun 202617:09
attackerkb
CNNVD
Nextcloud Server 授权问题漏洞
1 Jun 202600:00
cnnvd
CVE
CVE-2026-45691
1 Jun 202617:09
cve
Cvelist
CVE-2026-45691 Nextcloud: Bypass of second factor authentication on DAV endpoints
1 Jun 202617:09
cvelist
EUVD
EUVD-2026-33718
1 Jun 202617:09
euvd
Fedora
[SECURITY] Fedora 44 Update: nextcloud-33.0.5-1.fc44
17 Jun 202608:44
fedora
Fedora
[SECURITY] Fedora 43 Update: nextcloud-33.0.5-1.fc43
17 Jun 202608:26
fedora
NVD
CVE-2026-45691
1 Jun 202619:16
nvd
Positive Technologies
PT-2026-45535
1 Jun 202600:00
ptsecurity
RedhatCVE
CVE-2026-45691
1 Jun 202622:13
redhatcve
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13 May 2026 06:50Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.9
EPSS0.0029
SSVC
21