CVE-2026-70188CWE-444

CVE-2026-70188

Critical · published October 13, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
57.0
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00827 · 57.0th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2026-10-13T23:19Z
References (1)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70188 · [email protected]
EPSS history
Timeline
  • 15 OCT 03:33Z
    EPSS moved — → 1%
    epss
  • 13 OCT 19:00Z
    ASP.NET Core Security Feature Bypass Vulnerability
    cvelistv5
  • 13 OCT 19:00Z
    ASP.NET Core Security Feature Bypass Vulnerability
    cvelistv5