Advisory severityHigh8.1Red Hat Linux

High [CVE-2026-8400] Arbitrary class loading and instantiation via malicious IIOP server

This high-severity Red Hat Linux advisory covers CVE-2026-8400; related products: Red Hat Enterprise Linux 8.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-8400 Source published Aug 4, 2026Source updated Aug 4, 2026

VulniPulse record published Aug 8, 2026Record updated Aug 11, 2026

CVE-2026-8400

Monitor future Red Hat Linux CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 34 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

Summary

Arbitrary class loading and instantiation via malicious IIOP server. Red Hat rates this important (CVSS 8.1).

Weakness: CWE-470. Red Hat lists fixing advisory RHSA-2026:52949 with package java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10.

Affected product named by the advisory: Red Hat Enterprise Linux 8.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

java-1.8.0-ibm-1:1.8.0.8.70-1.el8_10
RHSA-2026:52949

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

To mitigate this issue, ensure that applications are configured to only connect to trusted IIOP servers. Restrict network access to prevent connections to untrusted or external IIOP endpoints.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.