CVE-2026-38429

CRITICALCVSS 9.8/10EPSS 0.30%

Last modified

CVE-2026-38429 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. OpenCMS v20 and before is vulnerable to XML External Entity (XXE) in the Admin Import DB feature due to insecure XML parsing of user supplied .zip files containing a manifest.xml.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

Description

OpenCMS v20 and before is vulnerable to XML External Entity (XXE) in the Admin Import DB feature due to insecure XML parsing of user supplied .zip files containing a manifest.xml.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
0.30%

21.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-38429?
OpenCMS v20 and before is vulnerable to XML External Entity (XXE) in the Admin Import DB feature due to insecure XML parsing of user supplied .zip files containing a manifest.xml.
How severe is CVE-2026-38429?
CVE-2026-38429 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.
How do I fix CVE-2026-38429?
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-2026-38429?

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

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Source: NVD / NIST