Advisory severityMedium4.8Red Hat Linux

Medium [CVE-2026-86818] Mailto header injection via percent-encoded field-name desynchronization

This medium-severity Red Hat Linux advisory covers CVE-2026-86818; related products: Red Hat Satellite 6.

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

CVE-2026-86818 Source published Sep 15, 2026Source updated Sep 15, 2026

VulniPulse record published Sep 16, 2026Record updated Sep 23, 2026

CVE-2026-86818

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Summary

Mailto header injection via percent-encoded field-name desynchronization. Red Hat rates this moderate (CVSS 4.8).

Weakness: CWE-838.

Affected product named by the advisory: Red Hat Satellite 6.

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 16 days ago·verify at source

Fixed versions

4.1.5

Official advisory · high-confidence parse· fetched 16 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Official advisory · high-confidence parse· fetched 16 days ago·verify at source

Discussion(0)

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