CVE-2023-50455

HIGH

Zammad < 6.2.0 - Denial of Service via Email Address Verification Spam

Title source: llm
STIX 2.1

Description

An issue was discovered in Zammad before 6.2.0. Due to lack of rate limiting in the "email address verification" feature, an attacker could send many requests for a known address to cause Denial Of Service (generation of many emails, which would also spam the victim).

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0070
EPSS Percentile 48.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (2)
zammad/zammad 6.1.0 (2 CPE variants)
zammad/zammad 6.2.0 alpha
Published Dec 10, 2023
Tracked Since Feb 18, 2026