# X.org libX11 vulnerabilities

Source: https://junglewise.ai/threats/technologies/libx11  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/libx11.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in X.org libX11: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-94284, was published on 28 September 2026. Nothing in the last four weeks, down from 3 vulnerabilities in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 3
- All time: 3 (0 critical, 0 exploited in the wild)

## About X.org libX11

X11 protocol client library for building graphical applications on Unix-like systems.

## Latest X.org libX11 vulnerabilities

- [CVE-2026-94284: libX11 out-of-bounds read in XIM trigger-key registration parser](https://junglewise.ai/threats/cve-2026-94284-an-out-of-bounds-read-vulnerability-in-libx11-s-xim-trigger-key) (medium, CVSS 5.5, published 28 Sep 2026)
- [CVE-2026-94283: libX11 out-of-bounds read in XIM attribute parser](https://junglewise.ai/threats/cve-2026-94283-an-out-of-bounds-read-vulnerability-in-libx11-s-xim-x-input) (medium, CVSS 6.5, published 28 Sep 2026)
- [CVE-2026-88806: libX11 buffer overflow in XkbGetMap key_sym_map handling](https://junglewise.ai/threats/cve-2026-88806-a-malicious-x-server-could-exploit-a-buffer-overflow-in-libx11) (high, CVSS 7.5, published 21 Sep 2026)

## Most severe X.org libX11 vulnerabilities

- [CVE-2026-88806: libX11 buffer overflow in XkbGetMap key_sym_map handling](https://junglewise.ai/threats/cve-2026-88806-a-malicious-x-server-could-exploit-a-buffer-overflow-in-libx11) (high, CVSS 7.5, published 21 Sep 2026)
- [CVE-2026-94283: libX11 out-of-bounds read in XIM attribute parser](https://junglewise.ai/threats/cve-2026-94283-an-out-of-bounds-read-vulnerability-in-libx11-s-xim-x-input) (medium, CVSS 6.5, published 28 Sep 2026)
- [CVE-2026-94284: libX11 out-of-bounds read in XIM trigger-key registration parser](https://junglewise.ai/threats/cve-2026-94284-an-out-of-bounds-read-vulnerability-in-libx11-s-xim-trigger-key) (medium, CVSS 5.5, published 28 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 3 vulnerabilities in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 1 | 0 | 0 |
| 28 Sep 2026 | 2 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other X.org technologies

- [X.org X Server](https://junglewise.ai/threats/technologies/x-org-x-server): 11 vulnerabilities
- [X.org XWayland](https://junglewise.ai/threats/technologies/x-org-xwayland): 10 vulnerabilities
- [X.org libXi](https://junglewise.ai/threats/technologies/libxi): 7 vulnerabilities
- [X.org libXfont2](https://junglewise.ai/threats/technologies/libxfont2): 5 vulnerabilities
- [X.org Xorg-Server](https://junglewise.ai/threats/technologies/xorg-server): 5 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "X.org libX11 vulnerabilities", https://junglewise.ai/threats/technologies/libx11, 9 November 2026.