Alpine edge
Source: Alpine secdb
xorg-server→ fixed in21.1.22-r0apk update && apk add --upgrade xorg-server
xwayland→ fixed in24.1.10-r0apk update && apk add --upgrade xwayland
Back to CVE digest
CVE-2026-33999 · cross-distro fix matrix
CVE-2026-33999: A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a
Affects 1 Linux release across 2 (distro × package) combinations. First disclosed: 2026-04-23.
CVSS v3:HIGH · 7.8(NVD-published)
Fix per ecosystem
Each block below is a distro release where CVE-2026-33999 has a known fix. Run the listed command on that distro to remediate.
Are YOU affected by CVE-2026-33999?
5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.
curl https://mindsparkstack.com/scan.sh | bash
Continuous monitoring beats manual checking
CVE-2026-33999dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.
See StackPatch ($99 lifetime)