CVE-2023-39960

highpriority · track · 30EPSS 0.007 · 53 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.71% (53rd) EPSS

CVSS 7.5 · high

Is it mine?

16 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. In Nextcloud Server starting with 25.0.0 and prior to 25.09 and 26.04; as well as Nextcloud Enterprise Server starting with 22.0.0 and prior to 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9, and 26.0.4; missing protection allows an attacker to brute force passwords on the WebDAV API. Nextcloud Server 25.0.9 and 26.0.4 and Nextcloud Enterprise Server 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9, and 26.0.4 contain patches for this issue. No known workarounds are available.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:Nsecondary · ENISA EU

v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:Nsecondary · security-advisories@github.comexploitability 3.1 · impact 1.4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-307USCWE-307US

affected products (16)

Products and version ranges known to be affected.

nextcloud security-advisories22.0.0, → 22.2.10.14enisa_euvdEU
nextcloud security-advisories23.0.0, → 23.0.12.9enisa_euvdEU
nextcloud security-advisories24.0.0, → 24.0.12.5enisa_euvdEU
nextcloud security-advisories25.0.0, → 25.0.9enisa_euvdEU
nextcloud security-advisories26.0.0, → 26.0.4enisa_euvdEU
Nextcloud GmbH Nextcloud Server22.0.0 → 22.2.10.14fstec_bduRU
Nextcloud GmbH Nextcloud Server23.0.0 → 23.0.12.9fstec_bduRU
Nextcloud GmbH Nextcloud Server24.0.0 → 24.0.12.5fstec_bduRU
Nextcloud GmbH Nextcloud Server25.0.0 → 25.0.9fstec_bduRU
Nextcloud GmbH Nextcloud Server26.0.0 → 26.0.4fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
nextcloud nextcloud server22.0.0 → 22.2.10.14nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server23.0.0 → 23.0.12.9nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server24.0.0 → 24.0.12.5nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server25.0.0 → 25.0.9nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server26.0.0 → 26.0.4nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2642Nextcloud: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2023-10-15csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Nextcloud ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd cert_bund NVD CVE.org MITRE

published 2023-10-13modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

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