CVE-2023-31597

Name: CVE-2023-31597
Creator: NVD / NIST
Published: 2023-05-18T18:15:10.017+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.43%

Last modified Jun 17, 2026

CVE-2023-31597 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.43%

34.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Zammad	Zammad	< 5.4.1

References

https://zammad.com/de/advisories/zaa-2023-03Patch, Vendor Advisory
https://zammad.com/de/advisories/zaa-2023-03Patch, Vendor Advisory

Timeline

Published: May 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-31597?

How severe is CVE-2023-31597?

CVE-2023-31597 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2023-31597?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-31597?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST