ALPINE-CVE-2026-33999

Source
https://security.alpinelinux.org/vuln/CVE-2026-33999
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33999.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-33999
Upstream
  • CVE-2026-33999
Published
2026-04-23T16:16:24Z
Modified
2026-11-03T06:32:54Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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 buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.

References

Affected packages

Alpine:v3.23 / xorg-server

Package

Name
xorg-server
Purl
pkg:apk/alpine/xorg-server?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
21.1.22-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33999.json"

Alpine:v3.24 / xorg-server

Package

Name
xorg-server
Purl
pkg:apk/alpine/xorg-server?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
21.1.22-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33999.json"

Alpine:v3.23 / xwayland

Package

Name
xwayland
Purl
pkg:apk/alpine/xwayland?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
24.1.10-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33999.json"

Alpine:v3.24 / xwayland

Package

Name
xwayland
Purl
pkg:apk/alpine/xwayland?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
24.1.10-r0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-33999.json"