Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-62899

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
11/08/2026
Last modified:
14/08/2026

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.90 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x
5.90
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:* 17.14.0 (including) 17.14.38 (excluding)
cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:* 18.8.0 (including) 18.8.3 (excluding)
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* 8.0.0 (including) 8.0.30 (excluding)
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* 9.0.0 (including) 9.0.19 (excluding)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* 10.0.0 (including) 10.0.11 (excluding)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools