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High 8.6Published Jan 8, 2026
CVE-2026-0719Libsoup: signed to unsigned conversion error leading to stack-based buffer overflow in libsoup ntlm authentication
Updated under an hour ago ()
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It affects Red Hat Enterprise Linux 10 and 8 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- Weakness (CWE)
- CWE-121
- 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
- Deferred
- Record last updated
- Jul 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:3.6.5-3.el10_1.9 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:3.6.5-3.el10_0.14 not affected | CNA record |
from 0:2.62.2-11.el7_9 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support redhat:rhel_aus | from 0:2.62.3-1.el8_2.8 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_eus_long_life | from 0:2.62.3-2.el8_4.8 not affected | CNA record |
from 0:2.62.3-2.el8_6.8 not affected | CNA record | |
from 0:2.62.3-2.el8_6.8 not affected | CNA record | |
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus | from 0:2.72.0-8.el9_4.9 not affected | CNA record |
Red Hat Red Hat OpenShift Dev Spaces (RHOSDS) 3.26 redhat:openshift_devspaces | from sha256:619c10386e0224e5228876a434c5b8d78d251bc383e2a9491503d6ceddd33c96 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 0:3.6.5-3.el10_1.9 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 0:3.6.5-3.el10_0.14 not affected | CISA ADP |
from 0:2.62.2-11.el7_9 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support redhat:rhel_aus | from 0:2.62.3-1.el8_2.8 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On redhat:rhel_eus_long_life | from 0:2.62.3-2.el8_4.8 not affected | CISA ADP |
from 0:2.62.3-2.el8_6.8 not affected | CISA ADP | |
from 0:2.62.3-2.el8_6.8 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support redhat:rhel_eus | from 0:2.72.0-8.el9_4.9 not affected | CISA ADP |
Red Hat Red Hat OpenShift Dev Spaces (RHOSDS) 3.26 redhat:openshift_devspaces | from 1770851052 not affected | CISA ADP |
References
- https://access.redhat.com/errata/RHSA-2026:1948vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2005vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2006vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2007vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2008vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2049vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2182vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2214vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2215vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2216vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2396vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2402vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2512vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2513vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2514vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2528vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2529vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2628vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2026:2844vendor-advisory, x-refsource-redhat
- https://access.redhat.com/security/cve/CVE-2026-0719vdb-entry, x-refsource-redhat
- https://bugzilla.redhat.com/show_bug.cgi?id=2427906issue-tracking, x-refsource-redhat
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/477
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0719.json
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