How severe is CVE-2023-42345?

CVE-2023-42345 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-42345 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-42345?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-42345 have an EU (EUVD) identifier?

Yes. CVE-2023-42345 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-46798.

When was CVE-2023-42345 published?

CVE-2023-42345 was published on 2026-05-08 and last updated on 2026-06-17.

CVE-2023-42345

CVE-2023-42345 is a medium-severity vulnerability with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-46798
Weakness: CWE-79
Published: 2026-05-08
Last modified: 2026-06-17

Description

A Cross Site Scripting vulnerability in Alkacon OpenCms before 16 exists via updateModelGroups.jsp.

Frequently asked questions

What is CVE-2023-42345?: A Cross Site Scripting vulnerability in Alkacon OpenCms before 16 exists via updateModelGroups.jsp.
How severe is CVE-2023-42345?: CVE-2023-42345 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-42345 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-42345?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-42345 have an EU (EUVD) identifier?: Yes. CVE-2023-42345 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-46798.
When was CVE-2023-42345 published?: CVE-2023-42345 was published on 2026-05-08 and last updated on 2026-06-17.

References

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

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