Cosminexus Component Container: Improper Restriction of XML External Entity Reference
CVE-2026-71375 is a high-severity improper restriction of XML external entity reference vulnerability in Cosminexus Component Container from Hitachi, with a CVSS 3.1 base score of 7.4 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 11-70-03, 11-60-03, 11-20-10 as the first without the flaw, so updating Cosminexus Component Container to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.41% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Cosminexus Component Container to 11-70-03 or 11-60-03 or 11-20-10 or 11-00-13, whichever matches your release line, or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Hitachi | Cosminexus Component Container | 11-70-01 up to, but not including, 11-70-03; 11-60 up to, but not including, 11-60-03; 11-50 through 11-50-03; 11-40 through 11-40-03; 11-30 through 11-30-08; 11-20 up to, but not including, 11-20-10; 11-10 through 11-10-11; 11-00 up to, but not including, 11-00-13; and 5 more ranges | 11-70-03, 11-60-03, 11-20-10, 11-00-13, 09-87-10, 09-80-05 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H. Scored by CNA (hitachi.co.jp).
Official description
Improper restriction of XML external entity reference vulnerability in Cosminexus Component Container. This issue affects Cosminexus Component Container: from 11-70-01 before 11-70-03, from 11-60 before 11-60-03, from 11-50 through 11-50-03, from 11-40 through 11-40-03, from 11-30 through 11-30-08, from 11-20 before 11-20-10, from 11-10 through 11-10-11, from 11-00 before 11-00-13, from 09-87 before 09-87-10, from 09-80 before 09-80-05, from 09-70 before 09-70-28, from 09-50 through 09-50-22, and from 09-00 through 09-00-18.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Restriction of XML External Entity Reference
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
How developers prevent this class of flaw
- Many XML parsers and validators can be configured to disable external entity expansion.
More Improper Restriction of XML External Entity Reference vulnerabilities (CWE-611)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
References
Other vulnerabilities in Cosminexus Component Container
- 9.8 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Improper Restriction of XML External Entity Reference vulnerabilities
- 8.5 High severity
- 7.7 High severity
- 7.5 High severity
- 7.5 High severity
- 8.6 High severity
- 7.5 High severity
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