CVE-2026-88092

Publication date 13 October 2026

Last updated 22 October 2026

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.4 · Critical

Score breakdown

Description

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

Read the notes from the security team

Status

Package Ubuntu Release Status
dotnet6 26.10 stonking Not in release
26.04 LTS resolute Not in release
24.04 LTS noble Not in release
22.04 LTS jammy
Vulnerable, fix deferred
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
dotnet7 26.10 stonking Not in release
26.04 LTS resolute Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Ignored see notes
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
dotnet8 26.10 stonking Not in release
26.04 LTS resolute Not in release
24.04 LTS noble
Fixed in 8.0.132-8.0.32-0ubuntu1~24.04.1
22.04 LTS jammy
Fixed in 8.0.132-8.0.32-0ubuntu1~22.04.1
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
dotnet10 26.10 stonking
Fixed in 10.0.113-10.0.13-0ubuntu1~26.10.1
26.04 LTS resolute
Fixed in 10.0.113-10.0.13-0ubuntu1~26.04.1
24.04 LTS noble
Fixed in 10.0.113-10.0.13-0ubuntu1~24.04.1
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
dotnet11 26.10 stonking
Fixed in 11.0.100-11.0.0~rc2-0ubuntu1~26.10.1
26.04 LTS resolute Not in release
24.04 LTS noble Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Notes

iconstantin

.NET 7 is end of life upstream.

mdeslaur

Marking .NET 6 as deferred until information is available to determine if it is impacted.

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.4 · Critical

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

References

Related Ubuntu Security Notices (USN)

Other references

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