CVE-2023-30539 json
Users can set up workflows using restricted and invisible system tags in Nextcloud
published 2023-04-17 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34929
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- nextcloud nextcloud_files_automated_tagging 1.14.2, 1.15.3
- nextcloud nextcloud_server 21.0.9.11, 22.2.10.11, 23.0.12.6, 24.0.11, 25.0.5
- github.com/nextcloud/files_automatedtagging#705 pull request
- github.com/nextcloud/server#37252 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- nextcloud security-advisories
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/nextcloud/files_automatedtagging/pull/705
issue-tracking, patch
-
github.com
/nextcloud/server/pull/37252
patch
-
github.com
/nextcloud/security-advisories/security/advisories/GHSA-3m2f-v8x7-9w99
vendor-advisory
-
hackerone.com
/reports/1895976
permissions-required
Sources
- CVE List CVE-2023-30539
- NVD CVE-2023-30539
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.