CVE-2018-6342 json
react-dev-utils on Windows vulnerable to Remote Code Execution
published 2018-12-31 7 y ago modified 2026-06-17 4 mo ago also GHSA-29gp-92wp-94q8 , EUVD-2019-0169
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.8%
- EPSS 2.8% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
react-dev-utils on Windows allows developers to run a local webserver for accepting various commands, including a command to launch an editor. The input to that command was not properly sanitized, allowing an attacker who can make a network request to the server (either via CSRF or by direct request) to execute arbitrary commands on the targeted system. This issue affects multiple branches: 1.x.x prior to 1.0.4, 2.x.x prior to 2.0.2, 3.x.x prior to 3.1.2, 4.x.x prior to 4.2.2, and 5.x.x prior to 5.0.2.
Patch / fix
- npm react-dev-utils 1.0.4, 2.0.2, 3.1.2, 4.2.2, 5.0.2
- facebook react-dev-utils 1.0.4, 2.0.2, 3.1.2, 4.2.2, 5.0.2
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction
2.84% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | react-dev-utils | >=1.0.0, <1.0.4 >=2.0.0, <2.0.2 >=3.0.0, <3.1.2 >=4.0.0, <4.2.2 >=5.0.0, <5.0.2 |
1.0.4 2.0.2 3.1.2 4.2.2 5.0.2 |
Affected products
- Facebook react-dev-utils
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
github.com
/facebook/create-react-app/pull/4866
web, third-party-advisory
-
github.com
/facebook/create-react-app/releases/tag/v1.1.5
web, release-notes, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-6342
advisory
-
github.com
/advisories/GHSA-29gp-92wp-94q8
advisory
-
github.com
/facebook/create-react-app
package
-
npmjs.com
/advisories/695
web
Sources
- CVE List CVE-2018-6342
- GitHub Advisory GHSA-29gp-92wp-94q8
- NVD CVE-2018-6342
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.