7.6 High

CVE-2026-85197 Libsoup: libsoup: heap use-after-free in libsoup http/2 client on_data_read() via goaway during body upload

Description

A flaw was found in libsoup. A malicious HTTP/2 server or a Man-in-the-Middle (MITM) attacker can exploit a heap use-after-free vulnerability in the HTTP/2 client implementation. This occurs when a GNOME application uploads a file using HTTP/2, and the server sends a GOAWAY frame while the file body is being read asynchronously. This can lead to memory corruption, potentially resulting in information disclosure or arbitrary code execution.

CVSS 3.1 detail

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

Exploitable remotely over the network, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector: Network
Attack complexity: Low
Privileges required: None
Interaction: Required
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 10.0 Extended Update Support	Versions not published

References

RHSA-2026:68235 access.redhat.com
RHSA-2026:82728 access.redhat.com
access.redhat.com access.redhat.com
RHBZ#2528425 bugzilla.redhat.com
gitlab.gnome.org gitlab.gnome.org

Timeline

Published September 4, 2026
Last modified November 4, 2026

The 1455 CVEs of Red Hat Enterprise Linux 10 →

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