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Critical severity9.1NVD Advisory· Published Apr 1, 2026· Updated Sep 22, 2026

CVE-2026-4374

CVE-2026-4374

Description

Improper Restriction of XML External Entity Reference vulnerability in RTI Connext Professional (Recording Service,Routing Service,Queueing Service,Cloud Discovery Service,Observability Collector) allows Serialized Data External Linking, Data Serialization External Entities Blowup. This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.0.0 before 7.3.1.1, from 6.1.0 before 6.1.2.34, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Rti/Connext Professionalllm-fuzzy2 versions
    from 7.4.0 before 7.7.0, from 7.1.0 before 7.3.1.1, from 6.1.0 before 6.1.2.34, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*+ 1 more
    • (no CPE)range: from 7.4.0 before 7.7.0, from 7.1.0 before 7.3.1.1, from 6.1.0 before 6.1.2.34, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*
    • cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*range: >=5.3.0,<=5.3.1.45

Patches

Vulnerability mechanics

References

1

News mentions

0

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