Use After Free in Red Hat Enterprise Linux 10
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.003 (17.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-85197 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- gitlab.gnome.org/GNOME/libsoup/-/work_items/552
- access.redhat.com/errata/RHSA-2026:68235 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:82728 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-85197?
- CVE-2026-85197 is a high-severity vulnerability in Red Hat Enterprise Linux 10, classified under Use After Free. CVSS score: 7.6/10. Published 2026-09-04.
- How severe is CVE-2026-85197?
- High severity. CVSS v3 base score is 7.6 out of 10.