CVE-2023-48306

criticalpriority · track · 39EPSS 0.008 · 56 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.80% (56th) EPSS

CVSS 9.8 · critical

Is it mine?

19 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. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and starting in version 22.0.0 and prior to versions 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Enterprise Server, the DNS pin middleware was vulnerable to DNS rebinding allowing an attacker to perform SSRF as a final result. Nextcloud Server 25.0.11, 26.0.6, and 27.1.0 and Nextcloud Enterprise Server 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 contain patches for this issue. No known workarounds are available.

cvss

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

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5–9.8

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · 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

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USprimaryCWE-918US

affected products (19)

Products and version ranges known to be affected.

nextcloud security-advisories22.0.0, → 22.2.10.16enisa_euvdEU
nextcloud security-advisories23.0.0, → 23.0.12.11enisa_euvdEU
nextcloud security-advisories24.0.0, → 24.0.12.7enisa_euvdEU
nextcloud security-advisories25.0.0, → 25.0.11enisa_euvdEU
nextcloud security-advisories26.0.0, → 26.0.6enisa_euvdEU
nextcloud security-advisories27.0.0, → 27.1.0enisa_euvdEU
Nextcloud GmbH Nextcloud Server22.0.0 → 22.2.10.16fstec_bduRU
Nextcloud GmbH Nextcloud Server23.0.0 → 23.0.12.11fstec_bduRU
Nextcloud GmbH Nextcloud Server24.0.0 → 24.0.12.7fstec_bduRU
Nextcloud GmbH Nextcloud Server25.0.0 → 25.0.11fstec_bduRU
Nextcloud GmbH Nextcloud Server26.0.0 → 26.0.6fstec_bduRU
Nextcloud GmbH Nextcloud Server27.0.0 → 27.1.0fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
nextcloud nextcloud server22.0.0 → 22.2.10.16nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server23.0.0 → 23.0.12.11nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server24.0.0 → 24.0.12.7nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server25.0.0 → 25.0.11nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server26.0.0 → 26.0.6nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*
nextcloud nextcloud server27.0.0 → 27.1.0nvdUScpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2973Nextcloud: Mehrere SchwachstellenDeutsch2023-11-20csaf · cert_bundDE
Ein entfernter, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Nextcloud ausnutzen, um einen Denial of Service Angriff durchzuführen, um einen Denial of Service Zustand herbeizuführen, Informationen offenzulegen, Dateien zu manipulieren, einen Cross-Site-Scripting-Angriff durchzuführen oder 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 2023-11-21modified 2026-06-17

related (4,184)

Related entries.

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+4179 more

references (9)

External citations — patches, advisories, analysis.

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