🛡️ CVE-2023-31597 — zammad

🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-863 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2023-31597 is classified as CWE-863: Incorrect Authorization. An authorisation check runs but reaches the wrong conclusion, permitting actions it should refuse.

Affected software

CVE-2023-31597 is recorded against 1 package.

  • zammad (fixed in 5.4.1)

Timeline and source

Published on 18 May 2023 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

zammad.com
zammad.com

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE CWE-863
Public Exploit ✅ No
Source NVD
Published 2023-05-18
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
zammad — 5.4.1

References

Similar Threats

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