CVE-2026-85197CWE-416

CVE-2026-85197

High · published September 4, 2026

CVSS v3.1
7.6
EPSS
0%
Percentile
18.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00269 · 18.1th percentile
Weakness
CWE-416 · Use After Free
Published
2026-09-04T12:17Z
References (6)
https://access.redhat.com/errata/RHSA-2026:68235 · [email protected]https://access.redhat.com/errata/RHSA-2026:82728 · [email protected]https://access.redhat.com/security/cve/CVE-2026-85197 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2528425 · [email protected]https://gitlab.gnome.org/GNOME/libsoup/-/work_items/552 · [email protected]https://gitlab.gnome.org/GNOME/libsoup/-/work_items/552 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 05 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 04 SEP 07:34Z
    Libsoup: libsoup: heap use-after-free in libsoup http/2 client on_data_read() via goaway during body upload
    cvelistv5