CVE-2026-85197 — Libsoup: libsoup: heap use-after-free in libsoup http/2 client on_data_read() via goaway during body upload
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…
Published: 2026-09-04 · CVSS: 7.6 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7