UBUNTU-CVE-2026-118264

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Source
https://ubuntu.com/security/CVE-2026-118264
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-118264
Upstream
Published
2026-10-29T00:00:00Z
Modified
2026-10-29T20:04:29Z
Severity
  • 9.1 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Echo is a Go web framework. From 4.0.0 until 4.16.1 and 5.4.1, Echo's Proxy middleware selects a raw tunnel from a client WebSocket upgrade request before verifying that the configured upstream accepted the upgrade. If the upstream rejects the upgrade with an ordinary keep-alive response, later HTTP requests on the connection are sent directly to that upstream without passing through Echo's router or route-specific middleware. This can bypass authentication or authorization enforced only by Echo routes, but requires an accessible proxy route, a cooperating rejected-upgrade response, and a target without independent upstream authorization. This issue is fixed in 4.16.1 and 5.4.1.

References

Affected packages

Ubuntu:20.04:LTS
golang-github-labstack-echo.v2

Package

Name
golang-github-labstack-echo.v2
Purl
pkg:deb/ubuntu/golang-github-labstack-echo.v2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.2.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-labstack-echo.v2-dev",
            "binary_version":  "2.2.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json"
golang-github-labstack-echo.v3

Package

Name
golang-github-labstack-echo.v3
Purl
pkg:deb/ubuntu/golang-github-labstack-echo.v3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.3.5-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-labstack-echo.v3-dev",
            "binary_version":  "3.3.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json"
Ubuntu:22.04:LTS
golang-github-labstack-echo

Package

Name
golang-github-labstack-echo
Purl
pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.2.1-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-labstack-echo-dev",
            "binary_version":  "4.2.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json"
golang-github-labstack-echo.v2

Package

Name
golang-github-labstack-echo.v2
Purl
pkg:deb/ubuntu/golang-github-labstack-echo.v2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.2.0-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-labstack-echo.v2-dev",
            "binary_version":  "2.2.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json"
golang-github-labstack-echo.v3

Package

Name
golang-github-labstack-echo.v3
Purl
pkg:deb/ubuntu/golang-github-labstack-echo.v3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.3.10-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-labstack-echo.v3-dev",
            "binary_version":  "3.3.10-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json"
Ubuntu:24.04:LTS
golang-github-labstack-echo

Package

Name
golang-github-labstack-echo
Purl
pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.11.1-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-labstack-echo-dev",
            "binary_version":  "4.11.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json"
Ubuntu:26.04:LTS
golang-github-labstack-echo

Package

Name
golang-github-labstack-echo
Purl
pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.12.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-labstack-echo-dev",
            "binary_version":  "4.12.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json"
Ubuntu:26.10
golang-github-labstack-echo

Package

Name
golang-github-labstack-echo
Purl
pkg:deb/ubuntu/golang-github-labstack-echo?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.12.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-github-labstack-echo-dev",
            "binary_version":  "4.12.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-118264.json"