PatchTheCVECVE-2026-85197: A flaw was found in libsoup
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Routine
HIGH 7.6
CVE-2026-85197 is a high-severity flaw (CVSS 7.6) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- High severity
- CISA SSVC: public proof of concept
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.6 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 82%) |
| CISA exploited list | No |
| Weakness | CWE-416 |
| Published | 2026-09-04 |
| Last modified | 2026-10-22 |
Publisher (CNA): Red Hat, Inc.
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Fedora 46 · gum · FIXED · 2.0.2-1.fc46 · FEDORA-2026-da0d6dd894 · source
sudo dnf upgrade --advisory=FEDORA-2026-da0d6dd894
Ubuntu 20.04 · libsoup2.4 · NOT AFFECTED
Ubuntu 22.04 · libsoup2.4 · NOT AFFECTED
Ubuntu 24.04 · libsoup2.4 · NOT AFFECTED
Ubuntu 22.04 · libsoup3 · FIXED · 3.0.7-0ubuntu1+esm9
sudo apt update && sudo apt install --only-upgrade libsoup3
dpkg --compare-versions "$(dpkg-query -W -f='${Version}' libsoup3)" ge "3.0.7-0ubuntu1+esm9" && echo PATCHED || echo STILL-VULNERABLE
Ubuntu 24.04 · libsoup3 · FIXED · 3.4.4-5ubuntu0.9
sudo apt update && sudo apt install --only-upgrade libsoup3
dpkg --compare-versions "$(dpkg-query -W -f='${Version}' libsoup3)" ge "3.4.4-5ubuntu0.9" && echo PATCHED || echo STILL-VULNERABLE
Debian 12 · libsoup2.4 · NOT AFFECTED
Debian 13 · libsoup2.4 · NOT AFFECTED
Debian 12 · libsoup3 · NO FIX YET
Debian 13 · libsoup3 · NO FIX YET
RHEL 10 · libsoup3 · FIXED · libsoup3-3.6.5-3.el10_2.14
sudo dnf upgrade --advisory=RHSA-2026:68235
rpm -q libsoup3
RHEL 10.0 Extended Update Support · libsoup3 · FIXED · libsoup3-3.6.5-3.el10_0.18
sudo dnf upgrade --advisory=RHSA-2026:82728
rpm -q libsoup3
RHEL 6 · libsoup · NOT AFFECTED
RHEL 7 · libsoup · NOT AFFECTED
RHEL 8 · libsoup · NOT AFFECTED
sudo dnf update --advisory=ALAS2023-2026-3144
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.