SE
Product
security-advisories
by nextcloud · last CVE Jun 1, 2026
134
CVEs
0
On KEV
9.8
Max CVSS
0
New 30D
Severity mix
Critical 7High 22Medium 91Low 14
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Add security-advisories to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-45810
6.8
0%
Jun 1
Nextcloud: Propfind requests for file comments allowed to load comments for other files
Affected: >= 31.0.0, < 31.0.12; >= 32.0.0, < 32.0.3
CVE-2023-32318
6.7
0%
May 26
User session not correctly destroyed on logout
Affected: >= 25.0.2, < 25.0.6; >= 26.0.0, < 26.0.1
CVE-2026-45282
6.5
0%
Jun 1
Nextcloud: Logged-in user bypasses share password and download restrictions on Text attachments via documentId leads to unauthorized file access
Affected: >= 32.0.0, < 32.0.9; >= 33.0.0, < 33.0.3
CVE-2026-45279
6.5
0%
Jun 1
Nextcloud: Limited path traversal via template API if using `{lang}` in config
Affected: >= 31.0.0, < 31.0.14; >= 32.0.0, < 32.0.4
CVE-2026-45275
6.5
0%
Jun 1
Nextcloud: Authorization bypass in approval feature allows unauthorized file sharing with approvers
Affected: < 2.7.2
CVE-2026-45267
6.5
0%
Jun 1
Nextcloud: Missing permission check for from submissions
Affected: < 5.2.6
CVE-2025-66511
6.5
0%
Dec 5
Nextcloud Calendar app used predictable proposal participant tokens
Affected: >= 6.0.0-rc.1, < 6.0.3
CVE-2025-58051
6.5
1%
Oct 16
Nextcloud Tables app allowed to include local file via PhpSpreadsheet when importing a table
Affected: >= 0.7.0, < 0.7.6; >= 0.8.0, < 0.8.8; >= 0.9.0, < 0.9.5
CVE-2025-47793
6.5
1%
May 16
Nextcloud Server and Groupfolders app vulnerable to bypass of group folder quota limit using attachment in text file
Affected: >= 30.0.0, < 30.0.2; >= 29.0.0, < 29.0.9; >= 28.0.0, < 28.0.12; >= 18.0.0, < 18.0.3; >= 17.0.0, < 17.0.5; >= 16.0.0, < 16.0.11
CVE-2024-52511
6.5
0%
Nov 15
Nextcloud Tables has an Authorization Bypass Through User-Controlled Key in Tables
Affected: >= 0.6.0, < 0.8.0
CVE-2024-52515
6.5
1%
Nov 15
Nextcloud Server has incomplete sanitization of SVG files allows to embed other images into previews
Affected: >= 29.0.0, < 29.0.1; >= 28.0.0, < 28.0.6; >= 27.0.0, < 27.1.10
CVE-2024-52520
6.5
1%
Nov 15
Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended
Affected: >= 28.0.0, < 28.0.10; >= 29.0.0, < 29.0.7
CVE-2024-52523
6.5
1%
Nov 15
Nextcloud Server Custom defined credentials of external storages are sent back to the frontend
Affected: >= 28.0.0, < 28.0.12; >= 29.0.0, < 29.0.9; >= 30.0.0, < 30.0.2
CVE-2023-48308
6.5
1%
Dec 21
Calendar app returns full stacktrace when an error happens while editing appointment
Affected: >= 3.0.0, < 4.5.3
CVE-2023-39952
6.5
1%
Aug 10
Advanced permissions not respected when copying entire group folders
Affected: >= 22.0.0, < 22.2.10.13; >= 23.0.0, < 23.0.12.8; >= 24.0.0, < 24.0.12.4; >= 25.0.0, < 25.0.8; >= 26.0.0, < 26.0.3; >= 27.0.0, < 27.0.1
CVE-2023-35173
6.5
0%
Jun 23
End-to-End encrypted file-drops can be made inaccessible
Affected: >= 1.12.0, < 1.12.4
CVE-2023-32319
6.5
1%
May 26
Basic auth header on WebDAV requests is not brute-force protected in Nextcloud
Affected: >= 24.0.0, < 24.0.11; >= 25.0.0, < 25.0.5
CVE-2022-39364
6.5
1%
Oct 27
Exception logging in Sharepoint app reveals clear-text connection details
Affected: < 22.2.10.5; >= 23.0.0, < 23.0.9; >= 24.0.0, < 24.0.5
CVE-2026-45285
6.4
0%
Jun 1
Nextcloud: Hidden Public Link creation when sharing to a Team External Member
Affected: >= 32.0.0, < 32.0.9; >= 33.0.0, < 33.0.3
CVE-2025-47790
6.4
0%
May 16
Nextcloud Server doesn't request second factor after session timeout
Affected: >= 26.0.0, < 26.0.13.15; >= 27.0.0, < 27.1.11.15; >= 28.0.0, < 28.0.14.6; >= 29.0.0, < 29.0.15; >= 30.0.0, < 30.0.9; >= 31.0.0, < 31.0.3
CVE-2026-45157
6.3
0%
Jun 1
Nextcloud: Valid share tokens allow to access tempory upload files of share owner
Affected: >= 32.0.0, < 32.0.9; >= 33.0.0, < 33.0.3
CVE-2024-37312
6.3
1%
Jun 14
Nextcloud user_oidc app's ID4me feature is available even when disabled
Affected: <= 1.3.6
CVE-2026-45278
6.1
0%
Jun 1
Nextcloud: Open Redirect in user_oidc login flow via protocol-relative URL bypass
Affected: >= 6.1.0, < 8.2.2
CVE-2025-66512
6.1
0%
Dec 5
Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud
Affected: >= 32.0.0beta1, < 32.0.3; < 31.0.12
CVE-2025-47792
6.1
0%
May 16
Nextcloud Desktop 3rdparty applications can create share links via socket API
Affected: < 3.15
CVE-2024-52512
6.1
0%
Nov 15
Nextcloud User OIDC has an open redirection when logging in with User OIDC
Affected: >= 6.0.0, < 6.1.0
CVE-2024-22400
6.1
0%
Jan 18
Open redirect in user_saml via RelayState parameter in Nextcloud User Saml
Affected: >= 5.0.0, < 5.1.5; >= 5.2.0, < 5.2.5; >= 6.0.0, < 6.0.1
CVE-2023-39955
6.1
1%
Aug 10
Notes attachment render HTML in preview mode
Affected: >= 4.4.0, < 4.8.0
CVE-2023-35171
6.1
1%
Jun 23
Nextcloud Server vulnerable to open redirect on "Unsupported browser" warning
Affected: >= 26.0.0, < 26.0.2
CVE-2026-45691
5.9
0%
Jun 1
Nextcloud: Bypass of second factor authentication on DAV endpoints
Affected: >= 32.0.0, < 32.0.9; >= 33.0.0, < 33.0.3
CVE-2026-45690
5.9
0%
Jun 1
Nextcloud: Two-Factor Authentication Bypass via Pending Session Token Replay
Affected: >= 32.0.0, < 32.0.9; >= 33.0.0, < 33.0.3
CVE-2024-52517
5.9
1%
Nov 15
Nextcloud Server's global credentials of external storages are sent back to the frontend
Affected: >= 28.0.0, < 28.0.11; >= 29.0.0, < 29.0.8; >= 30.0.0, < 30.0.1
CVE-2025-66550
5.7
0%
Dec 5
Nextcloud Calendar attachments of local files are offered to downloaded
Affected: >= 5.0.0-rc.1, < 5.2.4; < 4.7.17
CVE-2024-52509
5.7
1%
Nov 15
Nextcloud Mail app does not respect download permissions in shares
Affected: >=2.2.0, < 2.2.10; >= 3.6.0, < 3.6.2; >= 3.7.0, < 3.7.2
CVE-2025-66548
5.5
0%
Dec 5
Nextcloud Deck app allows to spoof file extensions by using RTLO characters
Affected: >= 1.15.0-beta.1, < 1.15.1; >= 1.14.0-beta.1, < 1.14.4; < 1.12.7
CVE-2025-66554
5.4
0%
Dec 5
Nextcloud Contacts vulnerable to Stored XSS in contacts app via organisation and title field
Affected: >= 7.0.0-alpha.1, < 7.2.5; >= 6.0.0-alpha1, < 6.0.6; < 5.5.4
CVE-2025-66514
5.4
0%
Dec 5
Nextcloud Mail stored HTML injection in subject text
Affected: >= 5.2.0-beta.1, < 5.5.3
CVE-2024-52518
5.4
1%
Nov 15
Nextcloud Server is missing password confirmation when changing external storage options
Affected: >= 28.0.0, < 28.0.12; >= 29.0.0, < 29.0.9; >= 30.0.0, < 30.0.2
CVE-2024-37884
5.4
0%
Jun 14
Nextcloud Server's users can delete old versions of read-only shared files
Affected: >= 26.0.0, < 26.0.13; >= 27.0.0, < 27.1.8; >= 28.0.0, < 28.0.4
CVE-2024-22402
5.4
1%
Jan 18
Improper handling of request URLs in Nextcloud Guests app allows guest users to bypass app allowlist
Affected: >= 2.4.0, < 2.4.1; >= 2.5.0, < 2.5.1; >= 3.0.0, < 3.0.1
CVE-2024-22213
5.4
1%
Jan 18
Cross-site Scripting when sending HTML as a comment in the Nextcloud Deck app
Affected: >= 1.9.0, < 1.9.5; >= 1.10.0, < 1.11.2
CVE-2023-49791
5.4
1%
Dec 22
Workflows do not require password confirmation on API level
Affected: >= 23.0.0, < 23.0.12.13; >= 24.0.0, < 24.0.12.9; >= 25.0.0, < 25.0.13.4; >= 26.0.0, < 26.0.9; >= 27.0.0, < 27.1.4
CVE-2023-48302
5.4
1%
Nov 21
Nextcloud Server vulnerable to Self XSS when pasting HTML into Text app with Ctrl+Shift+V
Affected: >= 25.0.0, < 25.0.13; >= 26.0.0, < 26.0.8; >= 27.0.0, < 27.1.3
CVE-2023-48301
5.4
1%
Nov 21
Nextcloud Server HTML injection in search UI when selecting a circle with HTML in the display name
Affected: >= 25.0.0, < 25.0.13; >= 26.0.0, < 26.0.8; >= 27.0.0, < 27.1.3
CVE-2026-45543
5.3
0%
Jun 1
Nextcloud: Deleting a Forms collaborator share leaves uploaded response files accessible through a lingering Files share
Affected: >= 4.3.0, < 5.2.7
CVE-2025-66513
5.3
0%
Dec 5
Nextcloud Tables app share information not limited to relevant users
Affected: >= 1.0.0-beta.1, < 1.0.1; >= 0.9.0-beta.1, < 0.9.6; < 0.8.9
CVE-2025-47791
5.3
0%
May 16
Nextcloud Server's test remote endpoint is not rate limited
Affected: >= 28.0.0, < 28.0.13; >= 29.0.0, < 29.0.10; >= 30.0.0, < 30.0.3
CVE-2024-52521
5.3
0%
Nov 15
Nextcloud Server has a potential hash collision for background jobs could skip queuing them
Affected: >= 28.0.0, < 28.0.10; >= 29.0.0, < 29.0.7
CVE-2023-39959
5.3
1%
Aug 10
Existence of calendars and address books can be checked by unauthenticated users
Affected: >= 25.0.0, < 25.0.9; >= 26.0.0, < 26.0.4; >= 27.0.0, < 27.0.1
CVE-2023-39958
5.3
1%
Aug 10
Missing brute force protection on password reset token OAuth2 API controller
Affected: >= 22.0.0, < 22.2.10.13; >= 23.0.0, < 23.0.12.8; >= 24.0.0, < 24.0.12.5; >= 25.0.0, < 25.0.9; >= 26.0.0, < 26.0.4; >= 27.0.0, < 27.0.1
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