Medium 5.5Published Oct 9, 2026

CVE-2026-108063Libhangul: null pointer dereference in hanja_new() when looking up a malformed hanja dictionary entry

Updated under an hour ago (2026-10-19 08:30 UTC)

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It affects Red Hat Enterprise Linux 10. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

A flaw was found in libhangul. When parsing Hanja dictionary files, the library fails to verify that an entry contains a valid value alongside its key. By providing a specially crafted dictionary file to an application that queries it, an attacker can trigger an unexpected application crash, resulting in a Denial of Service (DoS).

CVSS: 5.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Awaiting Analysis
Record last updated: Oct 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	10	CNA record

References

https://access.redhat.com/security/cve/CVE-2026-108063vdb-entry, x-refsource-redhat
https://github.com/libhangul/libhangul/blob/5094421d9586294b2aad09924b9a54e2e6060f06/hangul/hanja.c
https://github.com/libhangul/libhangul/issues/106

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.