Vulnerability Description
Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.
CVSS Score
5.9
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Visual Studio 2022 | >= 17.14.0, < 17.14.38 |
| Microsoft | Visual Studio 2026 | >= 18.8.0, < 18.8.3 |
| Microsoft | .Net | >= 8.0.0, < 8.0.30 |
| Apple | Macos | - |
| Linux | Linux Kernel | - |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62899PatchVendor Advisory
FAQ
What is CVE-2026-62899?
CVE-2026-62899 is a vulnerability with a CVSS score of 5.9 (MEDIUM). Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.
How severe is CVE-2026-62899?
CVE-2026-62899 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-62899?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Visual Studio 2022, Microsoft Visual Studio 2026, Microsoft .Net, Apple Macos, Linux Linux Kernel.