387 matches found
Event create can create attachments that link to other websites
None...
Nextcloud Server shipped insecure Archive_Tar version
None...
Ratelimit not applied on OCS API responses
None...
Linux client is vulnerable to directory traversal when downloading files (NC-SA-2020-032)
Missing sanitization of a server response in Nextcloud Desktop Client 2.6.4 for Linux allowed a malicious Nextcloud Server to store files outside of the dedicated sync directory...
Workflow rules only check the file extension for the mimetype instead of the content (NC-SA-2020-002)
A bug in Nextcloud Server 17.0.1 causes the workflow rules to depend their behaviour on the file extension when checking file mimetypes...
Name of private conversations leaked when linked via projects to a shared item (NC-SA-2020-011)
Improper access control in Nextcloud Talk 6.0.3 leaks the existance and the name of private conversations when linked them to another shared item via the projects feature...
Improper share updates could result in extended data access (NC-SA-2019-003)
A bug could expose more data in reshared link shares than intended by the sharer...
Stored XSS in contacts via group shares (NC-SA-2018-005)
A missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected group names, hence malicious search results could only be crafted by privileged users like admins or group admins...
Reflected XSS in error pages (NC-SA-2017-008)
Inadequate escaping of error messages leads to XSS vulnerabilities in multiple components.Note that Nextcloud employs a strict Content-Security-Policy preventing exploitation of this XSS issue on modern web browsers...
Content-Spoofing in "files" app (NC-SA-2017-006)
The top navigation bar displayed in the files list contained partially user-controllable input leading to a potential misrepresentation of information...
Reflected XSS in Gallery application (NC-SA-2016-009)
The gallery app was not properly sanitizing exception messages from the Nextcloud server. Due to an endpoint where an attacker could influence the error message this lead to a reflected Cross-Site-Scripting vulnerability...
Remote code execution in Nextcloud Flow via vulnerable Windmill version
None...
Improper neutralization of item names in projects feature (NC-SA-2020-010)
Improper neutralization of file names, conversation names and board names in Nextcloud Server 16.0.3, Nextcloud Talk 6.0.3 and Nextcloud Deck 0.6.5 causes an XSS when linking them with each others in a project...
Denial of Service attack (NC-SA-2017-004)
Due to an error in the application logic an authenticated adversary may trigger an endless recursion in the application leading to a potential Denial of Service...
Deck app allows to spoof file extensions by using RTLO characters
None...
Calendar attachments of local files are offered to downloaded
None...
user_oidc app stores client secret unencrypted in database
None...
Federated share accepting/declining is not logged in audit log
None...
Clear text storage of proxy parameters and passwords (NC-SA-2020-031)
A cleartext storage of sensitive information in Nextcloud Desktop Client 2.6.4 gave away information about used proxies and their authentication credentials...
Server-Side request forgery in New-Subscription feature of the calendar app (NC-SA-2019-014)
An authenticated server-side request forgery in Nextcloud server 16.0.1 allowed to detect local and remote services when adding a new subscription in the calendar application...
File access control rules not applied to image previews (NC-SA-2018-002)
A missing check for read permissions allowed users that received an incomming share containing files tagged so they should be denied access to still request a preview for those files...
Limitation of app specific password scope can be bypassed (NC-SA-2017-009)
Improper session handling allowed an application specific password without permission to the files access to the users file...
fileId parameter reveals workflow associations in Nextcloud Approval app
None...
Users can set up workflows using restricted and invisible system tags
None...
XSS in Desktop Client in call notification popup
None...
End-to-end encryption device setup did not verify public key
None...
Lack of ratelimit on shareinfo endpoint
None...
Arbitrary code execution in desktop client via OpenSSL config (NC-SA-2020-030)
A code injection in Nextcloud Desktop Client 2.6.4 allowed to load arbitrary code when placing a malicious OpenSSL config into a fixed directory...
Improper sanitization of HTML in directory names (NC-SA-2019-009)
Some basic HTML tags were rendered as Markup in directory names...
Stored XSS in autocomplete suggestions for file comments (NC-SA-2018-008)
A missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users...
Stored XSS in calendar via group shares (NC-SA-2018-004)
A missing sanitization of search results for an autocomplete field could lead to a stored XSS requiring user-interaction. The missing sanitization only affected group names, hence malicious search results could only be crafted by privileged users like admins or group admins...
Content-Spoofing in "files" app (NC-SA-2016-003)
The location bar in the files app was not verifying the passed parameters. An attacker could craft an invalid link to a fake directory structure and use this to display an attacker-controlled error message to the user...
Missing memory corruption protection on Windows release built (NC-SA-2020-035)
Missing ASLR and DEP protections in Nextcloud Desktop Client 2.6.4 for windows allowed to corrupt memory...
Missing permission check on resharing a board (NC-SA-2020-025)
Improper access control in Nextcloud Deck 0.8.0 allowed an attacker to reshare boards shared with them with more permissions than they had themselves...
File-drop content is visible through the gallery app (NC-SA-2019-012)
Improper authorization in Nextcloud server 17.0.0 causes leaking of previews and files when a file-drop share link is opened via the gallery app...
Bypass lock protection in Android app (NC-SA-2019-006)
If an attacker has physical access to an Android smartphone without a screen lock, but with nextcloud installed and set up, they can easily access the nextcloud-files even if the nextcloud app is locked with a fingerprint or pin...
Improper access control checks for share expiration date (NC-SA-2019-002)
A missing check could give recipient the possibility to extend the expiration date of a share they received...
Classification of calendar events is ignored by the activity stream (NC-SA-2019-001)
A missing check revealed the name of confidential events and private events to all users of a shared calendar...
Share tokens for public calendars disclosed (NC-SA-2017-011)
A logical error caused disclosure of valid share tokens for public calendars. Thus granting an attacker potentially access to publicly shared calendars without knowing the share token...
Stored XSS in "gallery" application (NC-SA-2016-001)
Due to a recent migration of the Gallery app to the new sharing endpoint a parameter changed from an integer to a string value. This value wasn't sanitized before and was thus now vulnerable to a Cross-Site-Scripting attack.To exploit this vulnerability an authenticated attacker has to share a...
Tables app allows limited SQLi in ORDER BY with malicious sort order argument for Table Views
None...
Re-Sharing allows increase of privileges (NC-SA-2020-029)
A logic error in Nextcloud Server 19.0.0 caused a privilege escalation allowing malicious users to reshare with higher permissions than they got assigned themselves...
Memory Leak in OCUtil.dll library in Desktop client can lead to DoS (NC-SA-2020-034)
A memory leak in the OCUtil.dll library used by Nextcloud Desktop Client 2.6.4 can lead to a DoS against the host system...
Possible denial of service when entering a long password (NC-SA-2020-028)
Improper check of inputs in Preferred providers app 1.6.0 allowed to perform a denial of service attack when using a very long password...
Removing emails from circles does not revoke access to shared items (NC-SA-2019-013)
Improper authorization in the Circles app 0.17.7 causes retaining access when an email address was removed from a circle...
Thumbnails of files leaked via Android content provider (NC-SA-2019-007)
If an attacker has physical access to an Android smartphone without a screen lock, but with nextcloud installed and set up, he can easily access the nextcloud-files even if the nextcloud app is locked with a fingerprint or pin...
Permission increase on re-sharing via OCS API (NC-SA-2017-001)
A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set.Note that this only affects folders and files that th...
Content-Spoofing in "files" app (NC-SA-2016-010)
The location bar in the files app was not verifying the passed parameters. An attacker could craft an invalid link to a fake directory structure and use this to display an attacker-controlled error message to the user...