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CVE-2026-56000

🗓️ 08 Jul 2026 07:36:15Reported by Alpine Linux Development TeamType 
alpinelinux
 alpinelinux
🔗 security.alpinelinux.org👁 9 Views

Local attackers with an X connection can trigger a heap use-after-free in xorg-server before 21.2.24 and xwayland before 24.1.13 via CommonMakeCurrent.

Related
Packages
ReporterTitlePublishedViews
Family
FreeBSD
xwayland -- Multiple vulnerabilities
7 Jul 202600:00
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FreeBSD
xorg-server -- Multiple vulnerabilities
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ATTACKERKB
CVE-2026-56000
8 Jul 202607:36
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Amazon
Important: xorg-x11-server-Xwayland
20 Jul 202600:00
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CBLMariner
CVE-2026-56000 affecting package xorg-x11-server-Xwayland for versions less than 24.1.13-1
12 Jul 202619:55
cbl_mariner
Circl
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8 Jul 202609:56
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CVE
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8 Jul 202607:36
cve
Cvelist
CVE-2026-56000 xorg-x11-server / xwayland GLX contextTags Use-After-Free in CommonMakeCurrent()
8 Jul 202607:36
cvelist
Debian CVE
CVE-2026-56000
8 Jul 202607:36
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EUVD
EUVD-2026-42202
8 Jul 202607:36
euvd
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Alpine Linuxanyanyxorg-server21.1.24-r0xorg-server-21.1.24-r0.apk
Alpine Linux3.24anyxorg-server21.1.24-r0xorg-server-21.1.24-r0.apk
Alpine Linuxanyanyxwayland24.1.13-r0xwayland-24.1.13-r0.apk
Alpine Linux3.24anyxwayland24.1.13-r0xwayland-24.1.13-r0.apk

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09 Jul 2026 19:47Current
6Medium risk
Vulners AI Score6
CVSS 3.17.8
CVSS 49
EPSS0.00192
SSVC
9