CVE-2026-85197
Libsoup: libsoup: heap use-after-free in libsoup http/2 client on_data_read() via goaway during body upload
- State
- Published
- Severity
- 7.6 High
- Published
- Sep 4, 2026
- Updated
- Oct 22, 2026
- Reserved
- Sep 3, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H | redhat |
Weaknesses
- CWE-416 Use After Free
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 10Red Hat |
|
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat |
|
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
- RHSA-2026:68235vendor-advisory
- RHSA-2026:82728vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-85197vdb-entry
- RHBZ#2528425issue-tracking
- https://gitlab.gnome.org/GNOME/libsoup/-/work_items/552
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