CVSS: 6.8EPSS: 0%CPEs: 2EXPL: 0CVE-2023-28844 – User without download rights can download older version of that file in nextcloud server
https://notcve.org/view.php?id=CVE-2023-28844
31 Mar 2023 — Nextcloud server is an open source home cloud implementation. In affected versions users that should not be able to download a file can still download an older version and use that for uncontrolled distribution. This issue has been addressed in versions 24.0.10 and 25.0.4. Users are advised to upgrade. There are no known workarounds for this vulnerability. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-w47p-f66h-h2vj • CWE-284: Improper Access Control •
CVSS: 7.8EPSS: 0%CPEs: 5EXPL: 0CVE-2023-28835 – Insecure randomness for default password in nextcloud
https://notcve.org/view.php?id=CVE-2023-28835
30 Mar 2023 — Nextcloud server is an open source home cloud implementation. In affected versions the generated fallback password when creating a share was using a weak complexity random number generator, so when the sharer did not change it the password could be guessable to an attacker willing to brute force it. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. This issue only affects users who do not have a password policy enabled, so enabling a password policy is an effective mitigation for... • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7w2p-rp9m-9xp9 • CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) •
CVSS: 10.0EPSS: 0%CPEs: 5EXPL: 0CVE-2023-28833 – Unrestricted filenames for logo or favicon as admin in the theming settings in nextcloud server
https://notcve.org/view.php?id=CVE-2023-28833
30 Mar 2023 — Nextcloud server is an open source home cloud implementation. In affected versions admins of a server were able to upload a logo or a favicon and to provided a file name which was not restricted and could overwrite files in the appdata directory. Administrators may have access to overwrite these files by other means but this method could be exploited by tricking an admin into uploading a maliciously named file. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. Users unable to upg... • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-ch7f-px7m-hg25 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-434: Unrestricted Upload of File with Dangerous Type •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2023-28644 – Reference fetch can saturate the server bandwidth for 10 seconds in nextcloud server
https://notcve.org/view.php?id=CVE-2023-28644
30 Mar 2023 — Nextcloud server is an open source home cloud implementation. In releases of the 25.0.x branch before 25.0.3 an inefficient fetch operation may impact server performances and/or can lead to a denial of service. This issue has been addressed and it is recommended that the Nextcloud Server is upgraded to 25.0.3. There are no known workarounds for this vulnerability. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9wmj-gp8v-477j • CWE-400: Uncontrolled Resource Consumption •
CVSS: 9.0EPSS: 0%CPEs: 4EXPL: 1CVE-2023-28643 – Potential share collision for recipients when caching is enabled in nextcloud server
https://notcve.org/view.php?id=CVE-2023-28643
30 Mar 2023 — Nextcloud server is an open source home cloud implementation. In affected versions when a recipient receives 2 shares with the same name, while a memory cache is configured, the second share will replace the first one instead of being renamed to `{name} (2)`. It is recommended that the Nextcloud Server is upgraded to 25.0.3 or 24.0.9. Users unable to upgrade should avoid sharing 2 folders with the same name to the same user. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hhq4-4pr8-wm27 • CWE-706: Use of Incorrectly-Resolved Name or Reference •
CVSS: 9.0EPSS: 0%CPEs: 8EXPL: 0CVE-2023-26482 – Scope of workflow operations is not validated in nextcloud server
https://notcve.org/view.php?id=CVE-2023-26482
30 Mar 2023 — Nextcloud server is an open source home cloud implementation. In affected versions a missing scope validation allowed users to create workflows which are designed to be only available for administrators. Some workflows are designed to be RCE by invoking defined scripts, in order to generate PDFs, invoking webhooks or running scripts on the server. Due to this combination depending on the available apps the issue can result in a RCE at the end. It is recommended that the Nextcloud Server is upgraded to 24.0.... • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h3c9-cmh8-7qpj • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •
CVSS: 8.5EPSS: 0%CPEs: 1EXPL: 0CVE-2023-25817 – Delete permissions are not saved when creating public share in Nextcloud server
https://notcve.org/view.php?id=CVE-2023-25817
27 Mar 2023 — Nextcloud server is an open source, personal cloud implementation. In versions from 24.0.0 and before 24.0.9 a user could escalate their permissions to delete files they were not supposed to deletable but only viewed or downloaded. This issue has been addressed andit is recommended that the Nextcloud Server is upgraded to 24.0.9. There are no known workarounds for this vulnerability. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8v5c-f752-fgpv • CWE-281: Improper Preservation of Permissions CWE-732: Incorrect Permission Assignment for Critical Resource •
CVSS: 7.5EPSS: 0%CPEs: 7EXPL: 0CVE-2023-25818 – Missing brute force protection on password reset token in Nextcloud Server
https://notcve.org/view.php?id=CVE-2023-25818
27 Mar 2023 — Nextcloud server is an open source, personal cloud implementation. In affected versions a malicious user could try to reset the password of another user and then brute force the 62^21 combinations for the password reset token. As of commit `704eb3aa` password reset attempts are now throttled. Note that 62^21 combinations would significant compute resources to brute force. None the less it is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v243-x6jc-42mp • CWE-307: Improper Restriction of Excessive Authentication Attempts •
CVSS: 7.8EPSS: 0%CPEs: 7EXPL: 0CVE-2023-25820 – Nextcloud Server and Enterprise Server missing brute force protection on password confirmation modal
https://notcve.org/view.php?id=CVE-2023-25820
22 Mar 2023 — Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform, and Nextcloud Enterprise Server is the enterprise version of the file server software. In Nextcloud Server versions 25.0.x prior to 25.0.5 and versions 24.0.x prior to 24.0.10 as well as Nextcloud Enterprise Server versions 25.0.x prior to 25.0.4, 24.0.x prior to 24.0.10, 23.0.x prior to 23.0.12.5, 22.x prior to 22.2.0.10, and 21.x prior to 21.0.9.10, when an attacker gets access to an already logged in user ses... • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-36g6-wjx2-333x • CWE-307: Improper Restriction of Excessive Authentication Attempts •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 1CVE-2023-25821 – Nextcloud download permissions can be changed by resharer
https://notcve.org/view.php?id=CVE-2023-25821
24 Feb 2023 — Nextcloud is an Open Source private cloud software. Versions 24.0.4 and above, prior to 24.0.7, and 25.0.0 and above, prior to 25.0.1, contain Improper Access Control. Secure view for internal shares can be circumvented if reshare permissions are also given. This issue is patched in versions 24.0.7 and 25.0.1. No workaround is available. • https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7w6h-5qgw-4j94 • CWE-284: Improper Access Control •