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.
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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.
- < 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
- 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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