CVE-2026-0719
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
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3Tags
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.
Analysis
Libsoup's NTLM authentication handler crashes when processing exceptionally long passwords due to a signed integer overflow in memory allocation calculations, affecting GNOME and applications relying on this library for network operations. An unauthenticated remote attacker can trigger a denial-of-service condition by sending specially crafted authentication requests. …
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.
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