// For flags

CVE-2023-30539

Users can set up workflows using restricted and invisible system tags in Nextcloud

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Nextcloud is a personal home server system. Depending on the set up tags and other workflows this issue can be used to limit access of others or being able to grant them access when there are system tag based files access control or files retention rules. It is recommended that the Nextcloud Server is upgraded to 24.0.11 or 25.0.5, the Nextcloud Enterprise Server to 21.0.9.11, 22.2.10.11, 23.0.12.6, 24.0.11 or 25.0.5, and the Nextcloud Files automated tagging app to 1.11.1, 1.12.1, 1.13.1, 1.14.2, 1.15.3 or 1.16.1. Users unable to upgrade should disable all workflow related apps. Users are advised to upgrade.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-04-12 CVE Reserved
  • 2023-04-17 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-11-07 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-284: Improper Access Control
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nextcloud
Search vendor "Nextcloud"
Nextcloud Files Automated Tagging
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging"
>= 1.14.0 < 1.14.2
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging" and version " >= 1.14.0 < 1.14.2"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Files Automated Tagging
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging"
>= 1.15.0 < 1.15.3
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging" and version " >= 1.15.0 < 1.15.3"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Files Automated Tagging
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging"
1.11.0
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging" and version "1.11.0"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Files Automated Tagging
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging"
1.12.0
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging" and version "1.12.0"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Files Automated Tagging
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging"
1.13.0
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging" and version "1.13.0"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Files Automated Tagging
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging"
1.16.0
Search vendor "Nextcloud" for product "Nextcloud Files Automated Tagging" and version "1.16.0"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Server
Search vendor "Nextcloud" for product "Nextcloud Server"
>= 21.0.0 < 21.0.9.11
Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 21.0.0 < 21.0.9.11"
enterprise
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Server
Search vendor "Nextcloud" for product "Nextcloud Server"
>= 22.0.0 < 22.2.10.11
Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 22.0.0 < 22.2.10.11"
enterprise
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Server
Search vendor "Nextcloud" for product "Nextcloud Server"
>= 23.0.0 < 23.0.12.6
Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 23.0.0 < 23.0.12.6"
enterprise
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Server
Search vendor "Nextcloud" for product "Nextcloud Server"
>= 24.0.0 < 24.0.11
Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.11"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Server
Search vendor "Nextcloud" for product "Nextcloud Server"
>= 24.0.0 < 24.0.11
Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 24.0.0 < 24.0.11"
enterprise
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Server
Search vendor "Nextcloud" for product "Nextcloud Server"
>= 25.0.0 < 25.0.5
Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.5"
-
Affected
Nextcloud
Search vendor "Nextcloud"
Nextcloud Server
Search vendor "Nextcloud" for product "Nextcloud Server"
>= 25.0.0 < 25.0.5
Search vendor "Nextcloud" for product "Nextcloud Server" and version " >= 25.0.0 < 25.0.5"
enterprise
Affected