CVE-2026-50262
5.5
MEDIUM
CVSS 3.1
Description
An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.
How to fix CVE-2026-50262
No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.
- Debian/xorg-server—no fix listed
- Debian/xwayland—no fix listed
Is CVE-2026-50262 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-50262.
Affected packages (2)
- from 0
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |