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CVE-2023-48303

Nextcloud Server admins can change authentication details of user configured external storage

LOW
2.7
CVSS Score
Published: November 21, 2023 at 10:00 PM UTC
Updated: June 17, 2026 at 06:33 AM UTC
1 product affected across 1 vendorNextcloud/server

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Severity
LOW2.7
Exploit prediction
EPSS 0.7%

Description

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and Nextcloud Enterprise Server, admins can change authentication details of user configured external storage. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.11, 26.0.6, and 27.1.0 contain a patch for this issue. No known workarounds are available.

Affected

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

Nextcloud/server· Nextcloudnextcloud-app
95%
25.0.0 ≤ v < 25.0.1126.0.0 ≤ v < 26.0.627.0.0 ≤ v < 27.1.0
Affected range stops below 25.0.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 26.0.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 27.1.0, 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:

Patch and advisory references

References (3)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2448-44rp-c7hh
x_refsource_MISCIssue TrackingPatch
Source: [email protected]
https://github.com/nextcloud/server/pull/39895
x_refsource_MISCPermissions Required
Source: [email protected]
https://hackerone.com/reports/2107934

CVSS

2.7LOW[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-284NVD-CWE-Other

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