CVE-2024-52520 Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended

Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and...

CVE-2024-52520 Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended

Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and...

CVE-2024-52521 Nextcloud Server has a potential hash collision for background jobs could skip queuing them

Nextcloud Server is a self hosted personal cloud system. MD5 hashes were used to check background jobs for their uniqueness. This increased the chances of a background job with arguments falsely being identified as already existing and not be queued for execution. By changing the Hash to SHA256 t...

CVE-2024-52521 Nextcloud Server has a potential hash collision for background jobs could skip queuing them

Nextcloud Server is a self hosted personal cloud system. MD5 hashes were used to check background jobs for their uniqueness. This increased the chances of a background job with arguments falsely being identified as already existing and not be queued for execution. By changing the Hash to SHA256 t...

CVE-2024-52521

The CVE records a vulnerability in Nextcloud Server where MD5 hashes were used to check background jobs for uniqueness, allowing a background job with specific arguments to be falsely identified as already existing and not queued. Technical details in connected documents confirm the root cause (M...

CVE-2024-52523

CVE-2024-52523 affects Nextcloud Server. When a user or administrator defines external storage with fixed credentials, the API returns those credentials and re-inserts them into the frontend, allowing an attacker with an active user session to read them in plain text. The vulnerability enables in...

CVE-2024-52523 Nextcloud Server Custom defined credentials of external storages are sent back to the frontend

Nextcloud Server is a self hosted personal cloud system. After setting up a user or administrator defined external storage with fixed credentials, the API returns them and adds them into the frontend again, allowing to read them in plain text when an attacker already has access to an active sessi...

CVE-2024-52523 Nextcloud Server Custom defined credentials of external storages are sent back to the frontend

Nextcloud Server is a self hosted personal cloud system. After setting up a user or administrator defined external storage with fixed credentials, the API returns them and adds them into the frontend again, allowing to read them in plain text when an attacker already has access to an active sessi...

CVE-2024-52525 Nextcloud Server User password is available in memory of the PHP process

Nextcloud Server is a self hosted personal cloud system. Under certain conditions the password of a user was stored unencrypted in the session data. The session data is encrypted before being saved in the session storage Redis or disk, but it would allow a malicious process that gains access to t...

Potential hash collision for background jobs could skip queuing them

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User password is available in memory of the PHP process

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CVE-2024-52525: Cleartext Storage of Sensitive Information

Nextcloud Server is a self hosted personal cloud system. Under certain conditions the password of a user was stored unencrypted in the session data. The session data is encrypted before being saved in the session storage Redis or disk, but it would allow a malicious process that gains access to t...

CVE-2024-52515: Use of Incorrectly-Resolved Name or Reference

Nextcloud Server is a self hosted personal cloud system. After an admin enables the default-disabled SVG preview provider, a malicious user could upload a manipulated SVG file referencing paths. If the file would exist the preview of the SVG would preview the other file instead. It is recommended...

CVE-2024-52517: Exposure of Sensitive Information to an Unauthorized Actor

Nextcloud Server is a self hosted personal cloud system. After storing "Global credentials" on the server, the API returns them and adds them into the frontend again, allowing to read them in plain text when an attacker already has access to an active session of a user. It is recommended that the...

CVE-2024-52514: Improper Access Control

Nextcloud Server is a self hosted personal cloud system. After a user received a share with some files inside being blocked by the files access control, the user would still be able to copy the intermediate folder inside Nextcloud allowing them to afterwards potentially access the blocked files...

CVE-2024-52521: Use of Weak Hash

Nextcloud Server is a self hosted personal cloud system. MD5 hashes were used to check background jobs for their uniqueness. This increased the chances of a background job with arguments falsely being identified as already existing and not be queued for execution. By changing the Hash to SHA256 t...

CVE-2024-52519: Insecure Storage of Sensitive Information

Nextcloud Server is a self hosted personal cloud system. The OAuth2 client secrets were stored in a recoverable way, so that an attacker that got access to a backup of the database and the Nextcloud config file, would be able to decrypt them. It is recommended that the Nextcloud Server is upgrade...

CVE-2024-52523: Exposure of Sensitive Information to an Unauthorized Actor

Nextcloud Server is a self hosted personal cloud system. After setting up a user or administrator defined external storage with fixed credentials, the API returns them and adds them into the frontend again, allowing to read them in plain text when an attacker already has access to an active sessi...

CVE-2024-52520: Uncontrolled Resource Consumption

Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and...

CVE-2024-52513: Exposure of Sensitive Information to an Unauthorized Actor

Nextcloud Server is a self hosted personal cloud system. After receiving a "Files drop" or "Password protected" share link a malicious user was able to download attachments that are referenced in Text files without providing the password. It is recommended that the Nextcloud Server is upgraded to...