← Back to CVEs

CVE-2026-4271

MEDIUM

5.3

Description

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application attempting to access memory that has already been freed, potentially causing application instability or crashes, resulting in a Denial of Service (DoS).

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/17/2026

Last Modified3/19/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gnome:libsoupredhat:enterprise_linux

Weaknesses (CWE)

CWE-416

References

https://access.redhat.com/security/cve/CVE-2026-4271(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2448044(secalert@redhat.com)

https://gitlab.gnome.org/GNOME/libsoup/-/issues/496(secalert@redhat.com)

https://gitlab.gnome.org/GNOME/libsoup/-/issues/496(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.