CVE-2026-47304 — dotnet
CVE-2026-47304 is a CWE-345 vulnerability in dotnet. A fix is available for dotnet — see the affected versions and patch details below.
.NET Security Feature Bypass Vulnerability
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- 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-2026-47304.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
Real-World Exposure
dotnetReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Bitnami packages — download data is not available via public APIs for these ecosystems.
Description
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦Bitnami | dotnet | ≥ 8.0.0&&< 8.0.29 | 8.0.29 |
Affected Products
.netmicrosoft.net frameworkmicrosoftvisual studio 2017microsoftvisual studio 2019microsoftvisual studio 2022microsoftvisual studio 2026microsoftDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for dotnet, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update dotnet to 8.0.29 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-47304 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.
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.
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Enterprise Linux 10 | dotnet8.0-0:8.0.129-1.el10_2 | RHSA-2026:41893 |
| Red Hat Enterprise Linux 10 | dotnet9.0-0:9.0.119-1.el10_2 | RHSA-2026:41895 |
| Red Hat Enterprise Linux 10 | dotnet10.0-0:10.0.110-1.el10_2 | RHSA-2026:41897 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | dotnet8.0-0:8.0.130-1.el10_0 | RHSA-2026:58566 |
| Red Hat Enterprise Linux 10.0 Extended Update Support | dotnet9.0-0:9.0.120-1.el10_0 | RHSA-2026:58567 |
| Red Hat Enterprise Linux 8 | dotnet9.0-0:9.0.119-1.el8_10 | RHSA-2026:41899 |
| Red Hat Enterprise Linux 8 | dotnet10.0-0:10.0.110-1.el8_10 | RHSA-2026:41900 |
| Red Hat Enterprise Linux 8 | dotnet8.0-0:8.0.129-1.el8_10 | RHSA-2026:41901 |
Frequently Asked Questions
Is CVE-2026-47304 in your dependencies?
Find it across Bitnami, including transitive dependencies.