CVE-2023-23944

mediumpriority · track · 26OT risk · elevatedEPSS 0.005 · 41 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.47% (41st) EPSS

CVSS 6.5 · medium

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-28

Nextcloud mail is an email app for the nextcloud home server platform. In versions prior to 2.2.2 user's passwords were stored in cleartext in the database during the duration of OAuth2 setup procedure. Any attacker or malicious user with access to the database would have access to these user passwords until the OAuth setup has been completed. It is recommended that the Nextcloud Mail app is upgraded to 2.2.2. There are no known workarounds for this issue.

cvss

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

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2–6.5

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.12lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.12lowCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:Nsecondary · security-advisories@github.comexploitability 0.5 · impact 1.4

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/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-312US

affected products (5)

Products and version ranges known to be affected.

Nextcloud Nextcloud desktop Client < 3.6.3all versionscert_bundDEcpe:/a:nextcloud:nextcloud:desktop_client__3.6.3
Nextcloud Nextcloud mail < 1.15.0all versionscert_bundDEcpe:/a:nextcloud:nextcloud:mail__1.15.0
Nextcloud Nextcloud mail < 2.2.2all versionscert_bundDEcpe:/a:nextcloud:nextcloud:mail__2.2.2
nextcloud security-advisories≤ < 2.2.2enisa_euvdEU
nextcloud mail< 2.2.2nvdUScpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0290Nextcloud: Mehrere SchwachstellenDeutsch2023-02-05csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Nextcloud bezüglich des Desktop-Clients und der Mail-Komponente ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen oder Informationen offenzulegen.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2023-02-06modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

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