Linux · Amazon Linux · Security advisory · July 20, 2026

ALAS2023-2026-1943: Security update for 13 packages

ALAS2023-2026-1943, released July 20, 2026, fixes 1 CVE across 13 products. None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
1
None rated Critical
Exploited
0
None reported
Highest CVSS
7.8
Base score, 0 to 10
Highest EPSS
0.0033
26th percentile

Fixed package versions

ProductReleaseFixed in
xorg-x11-server-Xephyramzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-Xephyr-debuginfoamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-Xnestamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-Xnest-debuginfoamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-Xorgamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-Xorg-debuginfoamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-Xvfbamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-Xvfb-debuginfoamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-commonamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-debuginfoamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-debugsourceamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-develamzn 202321.1.13-5.amzn2023.0.11
xorg-x11-server-sourceamzn 202321.1.13-5.amzn2023.0.11

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2026-55999 xorg-x11-server-Xwayland: Local attackers with a X connection able to provide PCX fonts to the X server xorg-server before 21.2.24 and xwaylan...7.8 0.0033 None reported
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