UBUNTU-CVE-2026-13676

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Source
https://ubuntu.com/security/CVE-2026-13676
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-13676.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-13676
Upstream
Published
2026-06-29T14:16:00Z
Modified
2026-07-01T21:19:39Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

fast-uri versions 2.3.1 through 3.1.2 and 4.0.0 fail to canonicalize Unicode (IDN) hostnames for HTTP-family URLs. The IDN conversion path calls a helper that does not exist on the global URL constructor, silently leaving the host in its original Unicode form while normalize() and equal() still return values that differ from a WHATWG-compatible URL parser. Applications that use fast-uri to enforce host-based policy (denylists, loopback filtering, redirect validation, outbound proxy routing) before passing the same URL to Node's URL or fetch can be bypassed when the two implementations resolve the same input to different hosts. Patches: upgrade to fast-uri 3.1.3 for the 3.x line or 4.0.1 for the 4.x line. Workarounds: enforce host policy using the same URL parser used for the actual request, or reject non-ASCII hosts before policy checks.

References

Affected packages

Ubuntu:18.04:LTS
node-ajv

Package

Name
node-ajv
Purl
pkg:deb/ubuntu/node-ajv?arch=source&distro=bionic

Affected ranges

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

Affected versions

5.*
5.0.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "node-ajv",
            "binary_version": "5.0.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-13676.json"
Ubuntu:20.04:LTS
node-ajv

Package

Name
node-ajv
Purl
pkg:deb/ubuntu/node-ajv?arch=source&distro=focal

Affected ranges

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

Affected versions

6.*
6.10.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "node-ajv",
            "binary_version": "6.10.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-13676.json"
Ubuntu:22.04:LTS
node-ajv

Package

Name
node-ajv
Purl
pkg:deb/ubuntu/node-ajv?arch=source&distro=jammy

Affected ranges

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

Affected versions

6.*
6.12.6-2
6.12.6-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "node-ajv",
            "binary_version": "6.12.6-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-13676.json"
Ubuntu:24.04:LTS
node-ajv

Package

Name
node-ajv
Purl
pkg:deb/ubuntu/node-ajv?arch=source&distro=noble

Affected ranges

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

Affected versions

6.*
6.12.6-3
8.*
8.12.0~ds+~2.1.1-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "node-ajv",
            "binary_version": "8.12.0~ds+~2.1.1-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-13676.json"
Ubuntu:25.10
node-ajv

Package

Name
node-ajv
Purl
pkg:deb/ubuntu/node-ajv?arch=source&distro=questing

Affected ranges

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

Affected versions

8.*
8.12.0~ds+~2.1.1-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "node-ajv",
            "binary_version": "8.12.0~ds+~2.1.1-5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-13676.json"
Ubuntu:26.04:LTS
node-ajv

Package

Name
node-ajv
Purl
pkg:deb/ubuntu/node-ajv?arch=source&distro=resolute

Affected ranges

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

Affected versions

8.*
8.12.0~ds+~2.1.1-5
8.17.1~ds+~3.0.1+~3.1.0-2
8.17.1~ds+~3.0.1+~3.1.0-4build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "node-ajv",
            "binary_version": "8.17.1~ds+~3.0.1+~3.1.0-4build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-13676.json"