CVE-2026-0719

HIGH

Red Hat Enterprise Linux - Stack-based Buffer Overflow in libsoup NTLM Authentication

Title source: llm
STIX 2.1

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.

References (22)

Core 22
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:1948
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2005
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2006
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2007
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2008
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2049
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2182
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2214
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2215
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2216
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2396
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2402
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2512
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2513
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2514
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2528
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2529
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2628
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2026:2844
Vendor Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-0719
Issue Tracking issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2427906

Scores

CVSS v3 8.6
EPSS 0.0006
EPSS Percentile 17.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (30)
Red Hat/Red Hat Enterprise Linux 10 0:3.6.5-3.el10_1.9
Red Hat/Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.6.5-3.el10_0.14
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:2.62.2-11.el7_9
Red Hat/Red Hat Enterprise Linux 8 0:2.62.3-13.el8_10
Red Hat/Red Hat Enterprise Linux 8 0:8.10-7
Red Hat/Red Hat Enterprise Linux 8.2 Advanced Update Support 0:2.62.3-1.el8_2.8
Red Hat/Red Hat Enterprise Linux 8.2 Advanced Update Support 0:8.10-7.el8_2.1
Red Hat/Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:2.62.3-2.el8_4.8
Red Hat/Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 0:8.10-7.el8_4.1
... and 20 more
Published Jan 08, 2026
Tracked Since Feb 18, 2026