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    844 vulnerabilities by NextCloud

    CVE-2026-77166 (GCVE-0-2026-77166)

    Vulnerability from nvd – Published: 2026-09-21 15:25 – Updated: 2026-09-21 18:43
    VLAI
    Summary
    The emoji field in the page emoji update endpoint does not properly validate user input. By injecting long text and line breaks, the sidebar layout becomes broken and can hide other items.
    Severity
    2.4 (Low)
    CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-21 18:42 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Collectives Affected: 3.2.1 , ≤ 3.5.0 (semver)
    		Create a notification for this product.
    Credits
    _dha (yoyomiski)
    Show details on NVD website
    To clipboard 

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    CVE-2026-77165 (GCVE-0-2026-77165)

    Vulnerability from nvd – Published: 2026-09-21 15:25 – Updated: 2026-09-21 18:44
    VLAI
    Summary
    File owners were unable to unlock TYPE_TOKEN locks placed by other users, leaving files permanently locked with no recovery path outside of the database.
    Severity
    6.5 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-21 18:44 UTC
    CWE
    • CWE-284 - Improper Access Control - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Server Affected: 32.0.0 , ≤ 34.0.0 (semver)
    		Create a notification for this product.
    Credits
    rz1027 (rz1027)
    Show details on NVD website
    To clipboard 

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    CVE-2026-82985 (GCVE-0-2026-82985)

    Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:40
    VLAI
    Summary
    The Photos app's filter-based "smart albums" build their file listing using the search configuration (photosSourceFolders) of the user viewing the album, rather than the album owner's configuration. When an album owner shares a smart album with another user, that user's own folder configuration is used to determine which of the owner's files are searched — allowing them to discover files (name, file ID, and other metadata) in folders the album owner never intended to include in the shared album. This requires the album owner to have shared a filter-based smart album with the attacker; it does not allow access to arbitrary users' files without such a share.
    Severity
    6.5 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:40 UTC
    CWE
    • CWE-284 - Improper Access Control - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Server Affected: 32.0.0 , < 32.0.0 (semver)
    		Create a notification for this product.
    Credits
    Joseph Semaan (suul)
    Show details on NVD website
    To clipboard 

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    CVE-2026-82982 (GCVE-0-2026-82982)

    Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
    VLAI
    Summary
    The Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it. The backend only enforced this check when the etag parameter was present and non-empty in the request. An attacker able to intercept and modify the approval request could omit the etag field entirely, bypassing the freshness check and approving or rejecting a file version they never reviewed.
    Severity
    4.3 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:41 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Approval Affected: 1.0.0 , ≤ 3.0.0 (semver)
    		Create a notification for this product.
    Credits
    Dang Hung Vi (vidang04)
    Show details on NVD website
    To clipboard 

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    CVE-2026-82980 (GCVE-0-2026-82980)

    Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
    VLAI
    Summary
    Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables: Cross-user manual locks : attacker locks a victim's files, blocking writes (PUT/MOVE/DELETE, editor saves). Lock-token disclosure: the app returns the lock token to unauthorized callers, enabling them to remove token-based locks (client locks) of other users.
    Severity
    6.3 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:42 UTC
    CWE
    • CWE-287 - Improper Authentication - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Files Lock Affected: 31.0.0 , ≤ 33.0.0 (semver)
    		Create a notification for this product.
    Credits
    Balvant Chavda (0x0doteth)
    Show details on NVD website
    To clipboard 

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    CVE-2026-77170 (GCVE-0-2026-77170)

    Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:41
    VLAI
    Summary
    The Deck config API allows authenticated users to set board-scoped configuration keys for arbitrary board IDs without validating whether the user owns or has permission to manage the referenced board.
    Severity
    4.3 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:41 UTC
    CWE
    • CWE-284 - Improper Access Control - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Deck Affected: 1.16.0 , ≤ 1.18.0 (semver)
    		Create a notification for this product.
    Credits
    Dang Hung Vi (vidang04)
    Show details on NVD website
    To clipboard 

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    CVE-2026-77169 (GCVE-0-2026-77169)

    Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
    VLAI
    Summary
    A vulnerability in the team folders (formerly group folders) app when used in combination with the workspace app allowed API/REST-only delegated administrators to bypass folder-level authorization controls. The workspace app enables organizations to delegate limited administrative privileges for team folder management via API/REST only, restricting access to folders for which the admin has advanced permissions.
    Severity
    6.5 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:42 UTC
    CWE
    • CWE-284 - Improper Access Control - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Team Folders Affected: 13.0.0 , < 22.0.0 (semver)
    		Create a notification for this product.
    Credits
    qloo (qloo)
    Show details on NVD website
    To clipboard 

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    CVE-2026-77164 (GCVE-0-2026-77164)

    Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:41
    VLAI
    Summary
    Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST /apps/circles/event/ and POST /apps/circles/incoming/ reach this code path, allowing any unauthenticated user to force the server to issue a GET request to an internal address. The response body of the internal request is never returned to the requester, so this is blind SSRF: an attacker can determine whether an internal service is reachable, but cannot read its response contents through this endpoint alone.
    Severity
    6.2 (Medium)
    CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:40 UTC
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Server Affected: 31.0.0 , ≤ 32.0.0 (semver)
    		Create a notification for this product.
    Credits
    Balvant Chavda (0x0doteth)
    Show details on NVD website
    To clipboard 

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    CVE-2026-68493 (GCVE-0-2026-68493)

    Vulnerability from nvd – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:40
    VLAI
    Summary
    After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.
    Severity
    3.1 (Low)
    CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:40 UTC
    CWE
    • CWE-639 - Insecure Direct Object Reference (IDOR)
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Server Affected: 32.0.0 , ≤ 34.0.0 (semver)
    		Create a notification for this product.
    Credits
    Melanie (milou)
    Show details on NVD website
    To clipboard 

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    CVE-2026-45810 (GCVE-0-2026-45810)

    Vulnerability from nvd – Published: 2026-06-01 17:13 – Updated: 2026-06-02 12:48
    VLAI
    Title
    Nextcloud: Propfind requests for file comments allowed to load comments for other files
    Summary
    Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 31.0.0 to before 31.0.12, and 32.0.0 to before 32.0.3, a missing check of a relation allowed authenticated users with access to any file comment, to read the content of all comments. It is recommended that the Nextcloud Server is upgraded to 31.0.12 or 32.0.3. It is recommended that the Nextcloud Enterprise Server is upgraded to 21.0.9.20, 22.2.10.35, 23.0.12.31, 24.0.12.30, 25.0.13.25, 26.0.13.22, 27.1.11.22, 28.0.14.13, 29.0.16.10, 30.0.17.5, 31.0.12 or 32.0.3
    Severity
    6.8 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-02 12:48 UTC
    CWE
    • CWE-639 - Authorization Bypass Through User-Controlled Key
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 31.0.0, < 31.0.12
    Affected: >= 32.0.0, < 32.0.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45722 (GCVE-0-2026-45722)

    Vulnerability from nvd – Published: 2026-06-01 17:11 – Updated: 2026-06-01 19:33
    VLAI
    Title
    Nextcloud: Tables app allows limited SQLi in ORDER BY with malicious sort order argument for Table Views
    Summary
    Nextcloud is an open source content collaboration platform. From versions 0.9.0 to before 0.9.7, and 1.0.0 to before 1.0.2, a missing sanitization in the Tables app allowed a user with access to the tables app to perform a limited SQL injection in the ORDER BY statement of a query. Compared to normal SQL injections, the ORDER BY is limited to extracting a single bit of information per request or to make the database wait for a given time. This issue has been patched in versions 0.9.7 and 1.0.2.
    Severity
    7.1 (High)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-01 19:33 UTC
    CWE
    • CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 0.9.0, < 0.9.7
    Affected: >= 1.0.0, < 1.0.2
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45691 (GCVE-0-2026-45691)

    Vulnerability from nvd – Published: 2026-06-01 17:09 – Updated: 2026-06-01 19:10
    VLAI
    Title
    Nextcloud: Bypass of second factor authentication on DAV endpoints
    Summary
    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
    Severity
    5.9 (Medium)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-01 19:09 UTC
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 32.0.0, < 32.0.9
    Affected: >= 33.0.0, < 33.0.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45690 (GCVE-0-2026-45690)

    Vulnerability from nvd – Published: 2026-06-01 17:08 – Updated: 2026-06-02 12:49
    VLAI
    Title
    Nextcloud: Two-Factor Authentication Bypass via Pending Session Token Replay
    Summary
    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, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-factor authentication (2FA) protections. When a user initiated login with valid credentials on a 2FA-enabled account, the system created a temporary session token before enforcing the second factor challenge. This token could be extracted and replayed via HTTP Basic Authentication to gain unauthorized access to authenticated endpoints. 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
    Severity
    5.9 (Medium)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-02 12:48 UTC
    CWE
    • CWE-287 - Improper Authentication
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 32.0.0, < 32.0.9
    Affected: >= 33.0.0, < 33.0.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45545 (GCVE-0-2026-45545)

    Vulnerability from nvd – Published: 2026-06-01 17:05 – Updated: 2026-06-02 15:23
    VLAI
    Title
    Nextcloud: SQL Injection in Column Type Parameter Allows Arbitrary SQL Execution
    Summary
    Nextcloud is an open source content collaboration platform. From versions 0.7.0 to before 0.7.7, 0.8.0 to before 0.8.10, 0.9.0 to before 0.9.8, and 1.0.0 to before 1.0.4, an authenticated attacker with access to the Tables app may be able to execute arbitrary up to 20 bytes long SQL queries, through a stored injection. With carefully crafted input it is possible to break out of the length limitation. The attacker could use this to extract information from the database, or modify data. This issue has been patched in versions 0.7.7, 0.8.10, 0.9.8, 1.0.4, and 2.0.0.
    Severity
    8.2 (High)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-02 15:23 UTC
    CWE
    • CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 0.7.0, < 0.7.7
    Affected: >= 0.8.0, < 0.8.10
    Affected: >= 0.9.0, < 0.9.8
    Affected: >= 1.0.0, < 1.0.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45544 (GCVE-0-2026-45544)

    Vulnerability from nvd – Published: 2026-06-01 17:03 – Updated: 2026-06-01 21:40
    VLAI
    Title
    Nextcloud: Information Disclosure of view filter metdata via Broken Sensitive Data Masking in ViewService
    Summary
    Nextcloud is an open source content collaboration platform. From version 0.8.0 to before version 1.0.4, the view filter criteria is exposed to users with read-only permissions in Nextcloud Tables. This issue has been patched in versions 1.0.4 and 2.0.0.
    Severity
    4.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-01 21:39 UTC
    CWE
    • CWE-1230 - Exposure of Sensitive Information Through Metadata
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 0.8.0, < 1.0.4
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45543 (GCVE-0-2026-45543)

    Vulnerability from nvd – Published: 2026-06-01 17:00 – Updated: 2026-06-01 19:33
    VLAI
    Title
    Nextcloud: Deleting a Forms collaborator share leaves uploaded response files accessible through a lingering Files share
    Summary
    Nextcloud is an open source content collaboration platform. From version 4.3.0 to before version 5.2.7, a removed collaborator retains unauthorized read access to uploaded respondent files for the affected form. The scope is limited to uploaded files for forms where that user previously had results access. This issue has been patched in version 5.2.7.
    Severity
    5.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-01 19:33 UTC
    CWE
    • CWE-552 - Files or Directories Accessible to External Parties
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 4.3.0, < 5.2.7
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45286 (GCVE-0-2026-45286)

    Vulnerability from nvd – Published: 2026-06-01 16:59 – Updated: 2026-06-01 19:13
    VLAI
    Title
    Nextcloud: Calendar app leaked user identifiers via attendee suggestion endpoint
    Summary
    Nextcloud is an open source content collaboration platform. From versions 5.5.13 to before 5.5.17, and 6.2.0 to before 6.2.3, an authenticated user can enumerate users on the same Nextcloud instance by using the Calendar app's endpoint for suggesting attendees. The sharing restrictions, applied to other endpoints, were not effective here. This issue has been patched in versions 5.5.17 and 6.2.3.
    Severity
    4.3 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-01 19:12 UTC
    CWE
    • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 5.5.13, < 5.5.17
    Affected: >= 6.2.0, < 6.2.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45285 (GCVE-0-2026-45285)

    Vulnerability from nvd – Published: 2026-06-01 16:57 – Updated: 2026-06-02 12:50
    VLAI
    Title
    Nextcloud: Hidden Public Link creation when sharing to a Team External Member
    Summary
    Nextcloud is an open source content collaboration platform. From versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, when a user shares a folder or file with a Nextcloud Team that includes an external member (a person added via email address who does not have a Nextcloud account), the system automatically creates a public link for that external member. This public link is not displayed in the share section of the folder, so the folder owner has no knowledge of its existence. It is sent via email to the external member. It grants the same permissions (read, write, delete, reshare, download) as the Team’s access. An attacker who receives or intercepts this link can access, modify, delete, reshare, and download all data in the shared folder without any further authentication. The folder owner cannot see or revoke the link through the normal sharing interface. This issue has been patched in versions 32.0.9 and 33.0.3.
    Severity
    6.4 (Medium)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-02 12:49 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 32.0.0, < 32.0.9
    Affected: >= 33.0.0, < 33.0.3
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-45284 (GCVE-0-2026-45284)

    Vulnerability from nvd – Published: 2026-06-01 16:57 – Updated: 2026-06-02 15:22
    VLAI
    Title
    Nextcloud: Wrong condition in the User OIDC app's LdapService allowed deleted LDAP users to authenticate
    Summary
    Nextcloud is an open source content collaboration platform. From version 1.3.6 to before version 8.4.0, an improper check allowed users that where provided by LDAP to still authenticate towards user OIDC after they where deleted. This issue has been patched in version 8.4.0.
    Severity
    4.6 (Medium)
    CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-06-02 15:21 UTC
    CWE
    • CWE-284 - Improper Access Control
    Assigner
    References
    Impacted products
    Vendor Product Version
    nextcloud security-advisories Affected: >= 1.3.6, < 8.4.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-77165 (GCVE-0-2026-77165)

    Vulnerability from cvelistv5 – Published: 2026-09-21 15:25 – Updated: 2026-09-21 18:44
    VLAI
    Summary
    File owners were unable to unlock TYPE_TOKEN locks placed by other users, leaving files permanently locked with no recovery path outside of the database.
    Severity
    6.5 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-21 18:44 UTC
    CWE
    • CWE-284 - Improper Access Control - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Server Affected: 32.0.0 , ≤ 34.0.0 (semver)
    		Create a notification for this product.
    Credits
    rz1027 (rz1027)
    Show details on NVD website
    To clipboard 

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    CVE-2026-77166 (GCVE-0-2026-77166)

    Vulnerability from cvelistv5 – Published: 2026-09-21 15:25 – Updated: 2026-09-21 18:43
    VLAI
    Summary
    The emoji field in the page emoji update endpoint does not properly validate user input. By injecting long text and line breaks, the sidebar layout becomes broken and can hide other items.
    Severity
    2.4 (Low)
    CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-21 18:42 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Collectives Affected: 3.2.1 , ≤ 3.5.0 (semver)
    		Create a notification for this product.
    Credits
    _dha (yoyomiski)
    Show details on NVD website
    To clipboard 

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    CVE-2026-68493 (GCVE-0-2026-68493)

    Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:40
    VLAI
    Summary
    After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.
    Severity
    3.1 (Low)
    CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:40 UTC
    CWE
    • CWE-639 - Insecure Direct Object Reference (IDOR)
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Server Affected: 32.0.0 , ≤ 34.0.0 (semver)
    		Create a notification for this product.
    Credits
    Melanie (milou)
    Show details on NVD website
    To clipboard 

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    CVE-2026-82985 (GCVE-0-2026-82985)

    Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:40
    VLAI
    Summary
    The Photos app's filter-based "smart albums" build their file listing using the search configuration (photosSourceFolders) of the user viewing the album, rather than the album owner's configuration. When an album owner shares a smart album with another user, that user's own folder configuration is used to determine which of the owner's files are searched — allowing them to discover files (name, file ID, and other metadata) in folders the album owner never intended to include in the shared album. This requires the album owner to have shared a filter-based smart album with the attacker; it does not allow access to arbitrary users' files without such a share.
    Severity
    6.5 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:40 UTC
    CWE
    • CWE-284 - Improper Access Control - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Server Affected: 32.0.0 , < 32.0.0 (semver)
    		Create a notification for this product.
    Credits
    Joseph Semaan (suul)
    Show details on NVD website
    To clipboard 

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    CVE-2026-77164 (GCVE-0-2026-77164)

    Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:41
    VLAI
    Summary
    Circles' remote-instance signature verification fetches the attacker-supplied keyId URL before trust in the remote instance is established, and explicitly allows local/private addresses for this request, bypassing Nextcloud's core SSRF protections. The public, unauthenticated endpoints POST /apps/circles/event/ and POST /apps/circles/incoming/ reach this code path, allowing any unauthenticated user to force the server to issue a GET request to an internal address. The response body of the internal request is never returned to the requester, so this is blind SSRF: an attacker can determine whether an internal service is reachable, but cannot read its response contents through this endpoint alone.
    Severity
    6.2 (Medium)
    CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:40 UTC
    CWE
    • CWE-918 - Server-Side Request Forgery (SSRF)
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Server Affected: 31.0.0 , ≤ 32.0.0 (semver)
    		Create a notification for this product.
    Credits
    Balvant Chavda (0x0doteth)
    Show details on NVD website
    To clipboard 

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    CVE-2026-77170 (GCVE-0-2026-77170)

    Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:41
    VLAI
    Summary
    The Deck config API allows authenticated users to set board-scoped configuration keys for arbitrary board IDs without validating whether the user owns or has permission to manage the referenced board.
    Severity
    4.3 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:41 UTC
    CWE
    • CWE-284 - Improper Access Control - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Deck Affected: 1.16.0 , ≤ 1.18.0 (semver)
    		Create a notification for this product.
    Credits
    Dang Hung Vi (vidang04)
    Show details on NVD website
    To clipboard 

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    CVE-2026-82982 (GCVE-0-2026-82982)

    Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
    VLAI
    Summary
    The Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it. The backend only enforced this check when the etag parameter was present and non-empty in the request. An attacker able to intercept and modify the approval request could omit the etag field entirely, bypassing the freshness check and approving or rejecting a file version they never reviewed.
    Severity
    4.3 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:41 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Approval Affected: 1.0.0 , ≤ 3.0.0 (semver)
    		Create a notification for this product.
    Credits
    Dang Hung Vi (vidang04)
    Show details on NVD website
    To clipboard 

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    CVE-2026-77169 (GCVE-0-2026-77169)

    Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
    VLAI
    Summary
    A vulnerability in the team folders (formerly group folders) app when used in combination with the workspace app allowed API/REST-only delegated administrators to bypass folder-level authorization controls. The workspace app enables organizations to delegate limited administrative privileges for team folder management via API/REST only, restricting access to folders for which the admin has advanced permissions.
    Severity
    6.5 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:42 UTC
    CWE
    • CWE-284 - Improper Access Control - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Team Folders Affected: 13.0.0 , < 22.0.0 (semver)
    		Create a notification for this product.
    Credits
    qloo (qloo)
    Show details on NVD website
    To clipboard 

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    CVE-2026-82980 (GCVE-0-2026-82980)

    Vulnerability from cvelistv5 – Published: 2026-09-18 01:26 – Updated: 2026-09-18 19:42
    VLAI
    Summary
    Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables: Cross-user manual locks : attacker locks a victim's files, blocking writes (PUT/MOVE/DELETE, editor saves). Lock-token disclosure: the app returns the lock token to unauthorized callers, enabling them to remove token-based locks (client locks) of other users.
    Severity
    6.3 (Medium)
    CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-18 19:42 UTC
    CWE
    • CWE-287 - Improper Authentication - Generic
    Assigner
    References
    Impacted products
    Vendor Product Version
    Nextcloud Files Lock Affected: 31.0.0 , ≤ 33.0.0 (semver)
    		Create a notification for this product.
    Credits
    Balvant Chavda (0x0doteth)
    Show details on NVD website
    To clipboard 

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    CERTFR-2026-AVI-1198

    Vulnerability from certfr_avis - Published: 2026-09-17 - Updated: 2026-09-17

    Une vulnérabilité a été découverte dans Nextcloud Server. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance.

    Solutions

    Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

    Impacted products
    Vendor Product Description
    Nextcloud Server Server versions 33.0.x antérieures à 33.0.7 pour nextcloud et nextcloud enterprise
    Nextcloud Server Server versions 30.0.x antérieures à 30.0.17.12 pour nextcloud enterprise
    Nextcloud Server Server versions 23.0.x antérieures à 23.0.12.38 pour nextcloud enterprise
    Nextcloud Server Server versions 28.0.x antérieures à 28.0.14.20 pour nextcloud enterprise
    Nextcloud Server Server versions 24.0.x antérieures à 24.0.13.37 pour nextcloud enterprise
    Nextcloud Server Server versions 31.0.x antérieures à 31.0.14.8 pour nextcloud enterprise
    Nextcloud Server Server versions 25.0.x antérieures à 25.0.13.32 pour nextcloud enterprise
    Nextcloud Server Server versions 32.0.x antérieures à 32.0.13 pour nextcloud et nextcloud enterprise
    Nextcloud Server Server versions 29.0.x antérieures à 29.0.16.19 pour nextcloud enterprise
    Nextcloud Server Server versions 22.x antérieures à 22.2.10.42 pour nextcloud enterprise
    Nextcloud Server Server versions 27.x et antérieures à 27.1.11.29 pour nextcloud enterprise
    Nextcloud Server Server versions 34.0.x antérieures à 34.0.2 pour nextcloud et nextcloud enterprise
    Nextcloud Server Server versions 26.0.x antérieures à 26.0.13.29 pour nextcloud enterprise
    References

    Show details on source website
    To clipboard 

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    },
    {
      "description": "Server versions 24.0.x ant\u00e9rieures \u00e0 24.0.13.37 pour nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 31.0.x ant\u00e9rieures \u00e0 31.0.14.8 pour nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 25.0.x ant\u00e9rieures \u00e0 25.0.13.32 pour nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 32.0.x ant\u00e9rieures \u00e0 32.0.13 pour nextcloud et nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 29.0.x ant\u00e9rieures \u00e0 29.0.16.19 pour nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 22.x ant\u00e9rieures \u00e0 22.2.10.42 pour nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 27.x et ant\u00e9rieures \u00e0 27.1.11.29 pour nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 34.0.x ant\u00e9rieures \u00e0 34.0.2 pour nextcloud et nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 26.0.x ant\u00e9rieures \u00e0 26.0.13.29 pour nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [],
  "initial_release_date": "2026-09-17T00:00:00",
  "last_revision_date": "2026-09-17T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-1198",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-09-17T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Nextcloud Server. Elle permet \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance.",
  "title": "Vuln\u00e9rabilit\u00e9 dans Nextcloud Server",
  "vendor_advisories": [
    {
      "published_at": "2026-09-17",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-7hwf-8pcj-33h4",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7hwf-8pcj-33h4"
    }
  ]
}

    CERTFR-2026-AVI-0973

    Vulnerability from certfr_avis - Published: 2026-08-06 - Updated: 2026-08-06

    De multiples vulnérabilités ont été découvertes dans les produits Nextcloud. Elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données et un contournement de la politique de sécurité.

    Solutions

    Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

    Impacted products
    Vendor Product Description
    Nextcloud Mail Mail versions 4.x et 5.x antérieures à 5.5.16
    Nextcloud Mail Mail versions 5.7.x antérieures à 5.7.13
    Nextcloud Mail Mail versions 3.5.x à 3.7.x antérieures à 3.7.25
    Nextcloud Server Server versions 32.0.10 à 32.0.x antérieures à 32.0.12 pour nextcloud et nextcloud enterprise
    Nextcloud Server Server versions 33.0.4 à 33.0.x antérieures à 33.0.6 pour nextcloud et nextcloud enterprise
    Nextcloud Server Server versions 34.0.x antérieures à 34.0.1 pour nextcloud
    Nextcloud Mail Mail versions 5.6.x antérieures à 5.6.20
    References

    Show details on source website
    To clipboard 

    {
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Mail versions 4.x et 5.x ant\u00e9rieures \u00e0 5.5.16",
      "product": {
        "name": "Mail",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Mail versions 5.7.x ant\u00e9rieures \u00e0 5.7.13",
      "product": {
        "name": "Mail",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Mail versions 3.5.x \u00e0 3.7.x ant\u00e9rieures \u00e0 3.7.25",
      "product": {
        "name": "Mail",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 32.0.10 \u00e0 32.0.x ant\u00e9rieures \u00e0 32.0.12 pour nextcloud et nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 33.0.4 \u00e0 33.0.x ant\u00e9rieures \u00e0 33.0.6 pour nextcloud et nextcloud enterprise",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Server versions 34.0.x ant\u00e9rieures \u00e0 34.0.1 pour nextcloud",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Mail versions 5.6.x ant\u00e9rieures \u00e0 5.6.20",
      "product": {
        "name": "Mail",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-61545",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-61545"
    },
    {
      "name": "CVE-2026-61527",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-61527"
    }
  ],
  "initial_release_date": "2026-08-06T00:00:00",
  "last_revision_date": "2026-08-06T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0973",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-08-06T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Nextcloud. Elles permettent \u00e0 un attaquant de provoquer une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Nextcloud",
  "vendor_advisories": [
    {
      "published_at": "2026-08-05",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-99gw-ww6p-f2rr",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-99gw-ww6p-f2rr"
    },
    {
      "published_at": "2026-08-05",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-vq3v-jv6f-6xp2",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vq3v-jv6f-6xp2"
    }
  ]
}