CVE-2023-30539

Name: CVE-2023-30539
Creator: NVD / NIST
Published: 2023-04-17T22:15:10.21+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.63%

Last modified Jun 17, 2026

CVE-2023-30539 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.63%

45.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Nextcloud	Nextcloud Files Automated Tagging	>= 1.14.0, < 1.14.2
Nextcloud	Nextcloud Files Automated Tagging	>= 1.15.0, < 1.15.3
Nextcloud	Nextcloud Files Automated Tagging	1.11.0
Nextcloud	Nextcloud Files Automated Tagging	1.12.0
Nextcloud	Nextcloud Files Automated Tagging	1.13.0
Nextcloud	Nextcloud Files Automated Tagging	1.16.0
Nextcloud	Nextcloud Server	>= 21.0.0, < 21.0.9.11
Nextcloud	Nextcloud Server	>= 22.0.0, < 22.2.10.11
Nextcloud	Nextcloud Server	>= 23.0.0, < 23.0.12.6
Nextcloud	Nextcloud Server	>= 24.0.0, < 24.0.11
Nextcloud	Nextcloud Server	>= 25.0.0, < 25.0.5

References

https://github.com/nextcloud/files_automatedtagging/pull/705Issue Tracking, Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3m2f-v8x7-9w99Vendor Advisory
https://github.com/nextcloud/server/pull/37252Patch
https://hackerone.com/reports/1895976Permissions Required
https://github.com/nextcloud/files_automatedtagging/pull/705Issue Tracking, Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3m2f-v8x7-9w99Vendor Advisory
https://github.com/nextcloud/server/pull/37252Patch
https://hackerone.com/reports/1895976Permissions Required

Timeline

Published: Apr 17, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-30539?

How severe is CVE-2023-30539?

CVE-2023-30539 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.

How do I fix CVE-2023-30539?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-30539?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST