CVE-2023-25579

Directory traversal in Nextcloud server

HIGH

7.5

CVSS Score

Published: February 22, 2023 at 06:21 PM UTC

Updated: June 17, 2026 at 05:41 AM UTC

1 product affected across 1 vendorNextcloud/server

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Severity

HIGH7.5

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

Nextcloud server is a self hosted home cloud product. In affected versions the `OC\Files\Node\Folder::getFullPath()` function was validating and normalizing the string in the wrong order. The function is used in the `newFile()` and `newFolder()` items, which may allow to creation of paths outside of ones own space and overwriting data from other users with crafted paths. This issue has been addressed in versions 25.0.2, 24.0.8, and 23.0.12. Users are advised to upgrade. There are no known workarounds for this issue.

Affected

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

Nextcloud/server · Nextcloudnextcloud-app

95%

v < 23.0.1220.0.0 ≤ v < 20.0.1421.0.0 ≤ v < 21.0.922.2.0 ≤ v < 22.2.1023.0.0 ≤ v < 23.0.1224.0.0 ≤ v < 24.0.825.0.0 ≤ v < 25.0.2

Affected range stops below 20.0.14, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.0.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.0.12, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.0.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 25.0.2, 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 (2)

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-273v-9h7x-p68v

x_refsource_MISCPatch

Source: [email protected]

https://github.com/nextcloud/server/pull/35074

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

7.5HIGH[email protected]

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

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-22

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