CVE-2022-41723 — net
HIGHCVE-2022-41723 is a high-severity (CVSS 7.5) vulnerability in golang.org/x/net. A fix is available for golang.org/x/net — see the affected versions and patch details below.
Denial of service via crafted HTTP/2 stream in net/http and golang.org/x/net
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2022-41723.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2022-41723 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 376,715 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
golang.org/x/netReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of small requests.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | golang.org/x/net | all versions | 0.7.0go get golang.org/x/net@v0.7.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for golang.org/x/net, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update golang.org/x/net to 0.7.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-41723 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2022-41723 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2022-41723. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
Within OpenShift Container Platform, the maximum impact of this vulnerability is a denial of service against an individual container so the impact could not cascade across the entire infrastructure, this vulnerability is rated Moderate impact.
| Product | Fixed in | Advisory |
|---|---|---|
| CERT-MANAGER-1.10-RHEL-9 | cert-manager-operator-bundle-container-v1.10.3-4 | RHSA-2023:4335 |
| Cryostat 2 on RHEL 8 | cryostat-tech-preview/cryostat-grafana-dashboard-rhel8:2.3.0-5 | RHSA-2023:3167 |
| Migration Toolkit for Virtualization 2.4 | migration-toolkit-virtualization/mtv-must-gather-api-rhel8:2.4.3-5 | RHBA-2023:6109 |
| Migration Toolkit for Virtualization 2.5 | migration-toolkit-virtualization/mtv-controller-rhel9:2.5.2-5 | RHBA-2023:6078 |
| MTA-6.2-RHEL-9 | mta/mta-hub-rhel9:6.2.0-16 | RHSA-2023:4627 |
| OADP-1.1-RHEL-8 | oadp/oadp-rhel8-operator:1.1.5-3 | RHSA-2023:3918 |
| OADP-1.1-RHEL-8 | oadp/oadp-kubevirt-velero-plugin-rhel8:1.1.6-5 | RHSA-2023:5314 |
| OCP-Tools-4.12-RHEL-8 | ocp-tools-4/jenkins-rhel8:v4.12.0-1686650770 | RHBA-2023:3611 |
Frequently Asked Questions
Is CVE-2022-41723 in your dependencies?
O3 Security finds CVE-2022-41723 across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.