CVE-2023-28834

Full path of data directory exposed to Nextcloud server users

MEDIUM
4.3
CVSS Score
Published: April 3, 2023 at 04:19 PM UTC
Updated: June 17, 2026 at 05:48 AM UTC
1 product affected across 1 vendorNextcloud/server

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

Nextcloud Server is an open source personal cloud server. Nextcloud Server 24.0.0 until 24.0.6 and 25.0.0 until 25.0.4, as well as Nextcloud Enterprise Server 23.0.0 until 23.0.11, 24.0.0 until 24.0.6, and 25.0.0 until 25.0.4, have an information disclosure vulnerability. A user was able to get the full data directory path of the Nextcloud server from an API endpoint. By itself this information is not problematic as it can also be guessed for most common setups, but it could speed up other unknown attacks in the future if the information is known. Nextcloud Server 24.0.6 and 25.0.4 and Nextcloud Enterprise Server 23.0.11, 24.0.6, and 25.0.4 contain patches for this issue. There are no known workarounds.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

23.0.0 ≤ v < 23.0.1424.0.0 ≤ v < 24.0.1025.0.0 ≤ v < 25.0.4
Affected range stops below 23.0.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 24.0.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 25.0.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_MISCExploitIssue TrackingThird Party Advisory
https://github.com/nextcloud/server/issues/33883
x_refsource_MISCExploitIssue TrackingPatchThird Party Advisory
https://hackerone.com/reports/1690510

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-212

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