miChecker improper restriction of XML external entity references
miChecker developed by Eclipse Foundation and provided by Ministry of Internal Affairs and Communications improperly restricts XML external entity references.
CSIRTS triage
- What
- miChecker improperly restricts XML external entity (XXE) references, allowing potential information disclosure.
- Who is affected
- All users of miChecker as provided by the Ministry of Internal Affairs and Communications.
- Urgency
- Remediation should be prioritized as XXE vulnerabilities can expose sensitive data and system information.
- Action
- Apply patches or updates from the Eclipse Foundation that properly restrict XML external entity processing.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://jvn.jp/en/jp/JVN40688603/
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-143040.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-14304 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
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