---
title: "CVE-2018-7158\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-7158?format=md
keywords: index, follow
---

# CVE-2018-7158

Publication date 17 May 2018

Last updated 26 August 2025

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-7158?format=md#impact-score)

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## Description

The `'path'` module in the Node.js 4.x release line contains a potential
regular expression denial of service (ReDoS) vector. The code in question
was replaced in Node.js 6.x and later so this vulnerability only impacts
all versions of Node.js 4.x. The regular expression, `splitPathRe`, used
within the `'path'` module for the various path parsing functions,
including `path.dirname()`, `path.extname()` and `path.parse()` was
structured in such a way as to allow an attacker to craft a string, that
when passed through one of these functions, could take a significant amount
of time to evaluate, potentially leading to a full denial of service.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| nodejs | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Not affected |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Vulnerable |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7158)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-7158)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-7158)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-7158)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2018-7158>