CVE intelligence

CVE-2026-85197

Vulnerability intelligence

Published Sep 4, 2026Sources checked Oct 28, 2026

7.6HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-85197 and is rated High severity with a CVSS score of 7.6. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Ubuntu Security Notices guidance

Vendor revision: Oct 21, 2026

USN-8890-1 fixed vulnerabilities in libsoup.

Microsoft Security Response Center guidance

Vendor revision: Oct 13, 2026

Release Notes

Vendor-listed releases

3.4.4-17

CISA KEVNot listedBased on the latest collected catalog

EPSS0.3%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-85197?

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: NVD