Denial of Service Vulnerability in libhangul Affecting Applications Using Hanja Dictionary Files
CVE-2026-108063

5.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
9 October 2026

What is CVE-2026-108063?

A flaw exists in the libhangul library related to the handling of Hanja dictionary files. This vulnerability arises when the library does not properly validate the entries within these files. An attacker can exploit this weakness by supplying a specially crafted dictionary file to any application that queries it. As a result, this can lead to unexpected application crashes, effectively causing a Denial of Service (DoS) condition. It is imperative for users of libhangul to be aware of this vulnerability and apply necessary updates or mitigations to ensure their applications remain secure.

References

https://access.redhat.com/security/cve/CVE-2026-108063
vdb-entryx_refsource_REDHAT
https://github.com/libhangul/libhangul/blob/5094421d95862...
https://github.com/libhangul/libhangul/issues/106

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Chamod Anuradha for reporting this issue.
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