CVE-2026-88806

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Source
https://cve.org/CVERecord?id=CVE-2026-88806
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88806.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-88806
Downstream
ALPINE (1)
AZL (1)
DEBIAN (1)
ECHO (1)
MGASA (1)
OESA (4)
openSUSE (2)
ROOT (2)
SUSE (6)
UBUNTU (1)
Related
openSUSE (2)
SUSE (6)
Published
2026-09-21T13:42:12Z
Modified
2026-10-18T10:45:16Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
libX11 XkbGetMap Reply Heap-based Buffer Overflow
Details

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key_sym_map.

Database specific 
{
    "cna_assigner":  "suse",
    "cwe_ids":  [
        "CWE-122"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88806.json"
}
References

Affected packages

Git / gitlab.freedesktop.org/xorg/lib/libx11

Affected ranges

Type
GIT
Repo
https://gitlab.freedesktop.org/xorg/lib/libx11
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b8d5a7046a98a244ee8ca3c9c07fd617c800dde2
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.8.14"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

Other
MODULAR_COPY
XACE-SELINUX-MERGE
XORG-6_7_99_1
XORG-6_7_99_2
XORG-6_7_99_902
XORG-6_7_99_903
XORG-6_8_1
XORG-6_8_99_10
XORG-6_8_99_13
XORG-6_8_99_14
XORG-6_8_99_15
XORG-6_8_99_6
XORG-6_8_99_7
XORG-6_8_99_9
XORG-6_8_99_900
XORG-6_8_99_901
XORG-6_8_99_902
XORG-6_8_99_903
XORG-6_99_99_900
XORG-6_99_99_901
XORG-6_99_99_902
XORG-6_99_99_903
XORG-6_99_99_904
XORG-MAIN
libX11-1.*
libX11-1.1.2
libX11-1.1.3
libX11-1.1.4
libX11-1.1.99.2
libX11-1.2
libX11-1.2.1
libX11-1.2.2
libX11-1.2.99.901
libX11-1.3
libX11-1.3.1
libX11-1.3.2
libX11-1.3.3
libX11-1.3.4
libX11-1.3.99.901
libX11-1.3.99.902
libX11-1.3.99.903
libX11-1.4.0
libX11-1.4.1
libX11-1.4.2
libX11-1.4.3
libX11-1.4.4
libX11-1.4.99.1
libX11-1.4.99.901
libX11-1.4.99.902
libX11-1.5.0
libX11-1.5.99.901
libX11-1.5.99.902
libX11-1.6.0
libX11-1.6.1
libX11-1.6.10
libX11-1.6.11
libX11-1.6.12
libX11-1.6.2
libX11-1.6.3
libX11-1.6.4
libX11-1.6.5
libX11-1.6.6
libX11-1.6.7
libX11-1.6.8
libX11-1.6.9
libX11-1.7.0
libX11-1.7.1
libX11-1.7.2
libX11-1.7.3
libX11-1.7.3.1
libX11-1.7.4
libX11-1.7.5
libX11-1.8
libX11-1.8.1
libX11-1.8.10
libX11-1.8.11
libX11-1.8.12
libX11-1.8.13
libX11-1.8.2
libX11-1.8.3
libX11-1.8.4
libX11-1.8.5
libX11-1.8.6
libX11-1.8.7
libX11-1.8.8
libX11-1.8.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-88806.json"