CVE-2023-23943 | BDVDB-2026-194802 Detail

nextcloudsecurity-advisories

Description#

Nextcloud mail is an email app for the nextcloud home server platform. In affected versions the SMTP, IMAP and Sieve host fields allowed to scan for internal services and servers reachable from within the local network of the Nextcloud Server. It is recommended that the Nextcloud Maill app is upgraded to 1.15.0 or 2.2.2. The only known workaround for this issue is to completely disable the nextcloud mail app.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-918 Server-Side Request Forgery (SSRF)

References#

Exploit#

No public exploit known

History#

Version 12023-02-06Record published in the CVE List.
Version 22025-03-10Most recent update recorded in the CVE List.

Published

Published: 2023-02-06
Last modified: 2025-03-10

Vendor information

Vendor: nextcloud
Product: security-advisories

All nextcloud vulnerabilities

Score

5.0 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 60.6.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Server-Side Request Forgery

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 2.0.0, < 2.2.2
Fixed
Not stated
Vulnerable
< 1.15.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.0 Medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Changed
Confidentiality	Low
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).