UBUNTU-CVE-2026-4923

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Source

https://ubuntu.com/security/CVE-2026-4923

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4923.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-4923

Upstream

CVE-2026-4923

Withdrawn

2026-05-21T12:08:04Z

Published

2026-03-26T19:17:00Z

Modified

2026-05-21T12:15:26.490223547Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Impact: When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path. Unsafe examples: /*foo-*bar-:baz /*a-:b-*c-:d /x/*a-:b/*c/y Safe examples: /*foo-:bar /*foo-:bar-*baz Patches: Upgrade to version 8.4.0. Workarounds: If you are using multiple wildcard parameters, you can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.

References

Affected packages

Ubuntu:16.04:LTS

node-path-to-regexp

Package

Name: node-path-to-regexp
Purl: pkg:deb/ubuntu/node-path-to-regexp?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-path-to-regexp",
            "binary_version": "1.0.1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4923.json"

Ubuntu:18.04:LTS

node-path-to-regexp

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.0.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-path-to-regexp",
            "binary_version": "1.0.1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4923.json"

Ubuntu:20.04:LTS

node-path-to-regexp

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.0.0-2

3.1.0-1

6.*

6.1.0-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-path-to-regexp",
            "binary_version": "6.1.0-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4923.json"

Ubuntu:22.04:LTS

node-path-to-regexp

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.2.0-1

6.2.0-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-path-to-regexp",
            "binary_version": "6.2.0-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4923.json"

Ubuntu:24.04:LTS

node-path-to-regexp

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.2.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-path-to-regexp",
            "binary_version": "6.2.1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4923.json"

Ubuntu:25.10

node-path-to-regexp

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.3.0-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-path-to-regexp",
            "binary_version": "6.3.0-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4923.json"

Ubuntu:26.04:LTS

node-path-to-regexp

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.3.0-1

8.*

8.3.0-1

8.4.0-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-path-to-regexp",
            "binary_version": "8.4.0-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4923.json"