CVE-2026-0719

Publication date 8 January 2026

Last updated 14 January 2026

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libsoup2.4	25.10 questing	Vulnerable, fix deferred
	25.04 plucky	Ignored end of life, was deferred [2026-01-13]
	24.04 LTS noble	Vulnerable, fix deferred
	22.04 LTS jammy	Vulnerable, fix deferred
	20.04 LTS focal	Vulnerable, fix deferred
	18.04 LTS bionic	Vulnerable, fix deferred
	16.04 LTS xenial	Vulnerable, fix deferred
libsoup3	25.10 questing	Vulnerable, fix deferred
	25.04 plucky	Ignored end of life, was deferred [2026-01-13]
	24.04 LTS noble	Vulnerable, fix deferred
	22.04 LTS jammy	Vulnerable, fix deferred

Notes

hlibk

As of 2026-01-13, the upstream PR fixing this issue has not yet been merged.

Severity score breakdown

Parameter	Value
Base score	8.6 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	Low
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H