Technology · X.org
X.org Xorg-Server vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in X.org Xorg-Server: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-56000, was published on 8 July 2026.
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 0
- Exploited in the wild
- 0
About X.org Xorg-Server
X.Org Server is the free and open-source implementation of the X Window System display server.
Latest X.org Xorg-Server vulnerabilities
- CVE-2026-56000: X.Org xorg-server and xwayland heap use-after-free in GLX CommonMakeCurrentinfoCVSS 9
- CVE-2026-55999: X.Org xorg-server and xwayland heap buffer overflow in glamor font atlashighCVSS 8.5
- CVE-2026-50263: X.Org X server and Xwayland use-after-free in CreateSaverWindowmediumCVSS 5.5
- CVE-2025-62230: X.Org X server use-after-free in Xkb client resource removalhighCVSS 7.3EPSS 0.3%
- CVE-2025-62231: X.Org X server integer overflow in XkbSetCompatMaphighCVSS 7.3EPSS 0.3%
Most severe X.org Xorg-Server vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-55999: X.Org xorg-server and xwayland heap buffer overflow in glamor font atlashighCVSS 8.5
- CVE-2025-62231: X.Org X server integer overflow in XkbSetCompatMaphighCVSS 7.3EPSS 0.3%
- CVE-2025-62230: X.Org X server use-after-free in Xkb client resource removalhighCVSS 7.3EPSS 0.3%
- CVE-2026-50263: X.Org X server and Xwayland use-after-free in CreateSaverWindowmediumCVSS 5.5
- CVE-2026-56000: X.Org xorg-server and xwayland heap use-after-free in GLX CommonMakeCurrentinfoCVSS 9
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 2 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/xorg-server.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "X.org Xorg-Server vulnerabilities", https://junglewise.ai/threats/technologies/xorg-server, 26 September 2026.