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…

Critical · published May 5, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
44.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00540 · 44.6th percentile
Published
2026-05-05T00:00Z
EPSS history
Timeline
  • 05 MAY 00:00Z
    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…
    cvelistv5