CVE-2022-24838

MEDIUM

Nextcloud Calendar < 3.2.2 - SMTP Command Injection via Newlines in Appointment Emails

Title source: llm
STIX 2.1

Description

Nextcloud Calendar is a calendar application for the nextcloud framework. SMTP Command Injection in Appointment Emails via Newlines: as newlines and special characters are not sanitized in the email value in the JSON request, a malicious attacker can inject newlines to break out of the `RCPT TO:<BOOKING USER'S EMAIL> ` SMTP command and begin injecting arbitrary SMTP commands. It is recommended that Calendar is upgraded to 3.2.2. There are no workaround available.

References (3)

Core 3

Scores

CVSS v3 5.3
EPSS 0.0878
EPSS Percentile 92.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-74
Status published
Products (1)
nextcloud/calendar < 3.2.2
Published Apr 11, 2022
Tracked Since Feb 18, 2026