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High7.8Red Hat Linux Updated

High [CVE-2026-90616] Arbitrary code execution via missing symlink protection

This high-severity Red Hat Linux advisory covers CVE-2026-90616 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.

CVE-2026-90616 Published Sep 12, 2026Updated by vendor Sep 12, 2026
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Red Hat LinuxRed Hat Enterprise Linux
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Summary

Arbitrary code execution via missing symlink protection. Red Hat rates this important (CVSS 7.8).

Weakness: CWE-59.

Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 1 more.

Affected products named by the advisory: Red Hat package: flatpak.

Affected versions
  • < 1.18.1

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

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

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

Mitigation checklist

Recommended fix / mitigation
  • To reduce the risk of exploitation, users should only install Flatpak applications from trusted sources. Regularly reviewing and removing unnecessary or untrusted Flatpak applications can further limit exposure.

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

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