8.6
High
CVE-2026-0719 Libsoup: signed to unsigned conversion error leading to stack-based buffer overflow in libsoup ntlm authentication
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:HExploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service | Versions not published | |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 9.4 Extended Update Support | Versions not published |
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References
- RHSA-2026:1948 access.redhat.com
- RHSA-2026:2005 access.redhat.com
- RHSA-2026:2006 access.redhat.com
- RHSA-2026:2007 access.redhat.com
- RHSA-2026:2008 access.redhat.com
- RHSA-2026:2049 access.redhat.com
- RHSA-2026:2182 access.redhat.com
- RHSA-2026:2214 access.redhat.com
- RHSA-2026:2215 access.redhat.com
- RHSA-2026:2216 access.redhat.com
- RHSA-2026:2396 access.redhat.com
- RHSA-2026:2402 access.redhat.com
- RHSA-2026:2512 access.redhat.com
- RHSA-2026:2513 access.redhat.com
- RHSA-2026:2514 access.redhat.com
- RHSA-2026:2528 access.redhat.com
- RHSA-2026:2529 access.redhat.com
- RHSA-2026:2628 access.redhat.com
- RHSA-2026:2844 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2427906 bugzilla.redhat.com
- gitlab.gnome.org gitlab.gnome.org
Timeline
- Published
- Last modified
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