Alpine: libx11: security update to 1.8.14-r0

high Tenable Cloud Security Plugin ID 476149

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap
overflowing the key_sym_map. (CVE-2026-88806)

- An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before
1.8.14 could be used by malicious X servers to crash attached X clients. (CVE-2026-94283)

- An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before
1.8.14 could be used by malicious X servers to crash attached X clients. (CVE-2026-94284)

- An out-of-bounds read in libX11's byte-oriented codeset parser in libX11 before 1.8.14 could be used by
malicious X servers to crash attached X clients. (CVE-2026-94285)

Solution

Update the libx11 library and its related packages to version 1.8.14-r0 or later.

Plugin Details

Severity: High

ID: 476149

Version: Revision 1.1

Type: Local

Family: Alpine Linux Local Security Checks

Published: 10/18/2026

Updated: 10/18/2026

Supported Sensors: Agentless Assessment

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.41

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-88806

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/21/2026

Reference Information

CVE: CVE-2026-88806, CVE-2026-94283, CVE-2026-94284, CVE-2026-94285

IAVB: 2026-B-0293

Detections

Analytics