CVE-2026-62899

Inconsistent interpretation of http requests ('http request/response smuggling') in .NET allows an unauthorized attacker to bypass a security feature over a network.

CVSS 3.1

5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-28)

CWE

CWE-444

Published

2026-08-11

Modified

2026-10-28

Record from

the NVD, synced 2026-10-28

Affected

• microsoft:.net
• microsoft:visual_studio_2022
• microsoft:visual_studio_2026

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62899

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