CVE-2026-2443

MEDIUM

5.3

Description

A flaw was identified in libsoup, a widely used HTTP library in GNOME-based systems. When processing specially crafted HTTP Range headers, the library may improperly validate requested byte ranges. In certain build configurations, this could allow a remote attacker to access portions of server memory beyond the intended response. Exploitation requires a vulnerable configuration and access to a server using the embedded SoupServer component.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/13/2026

Last Modified3/23/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gnome:libsoupredhat:enterprise_linux

Weaknesses (CWE)

CWE-125

References

https://access.redhat.com/security/cve/CVE-2026-2443(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2439671(secalert@redhat.com)

https://gitlab.gnome.org/GNOME/libsoup/-/issues/487(secalert@redhat.com)

IOC Correlations

No correlations recorded

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