CVE-2023-42346

Name: CVE-2023-42346
Creator: NVD / NIST
Published: 2026-05-08T05:16:09.85+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2023-42346 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Alkacon OpenCms before 16 allows XXE when the <!DOCTYPE> refers to an external host.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

Alkacon OpenCms before 16 allows XXE when the <!DOCTYPE> refers to an external host.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.23%

14.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-611

References

https://labs.watchtowr.com/xxe-you-can-depend-on-me-opencms/

Timeline

Published: May 8, 2026
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2023-42346?

Alkacon OpenCms before 16 allows XXE when the <!DOCTYPE> refers to an external host.

How severe is CVE-2023-42346?

CVE-2023-42346 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2023-42346?

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-2023-42346?

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

Scan your code now

Source: NVD / NIST