CVE-2021-39178 XSS in Image Optimization API for Next.js versions between 10.0.0 and 11.1.0

2021-08-3023:55:09

CWE-79

GitHub_M

www.cve.org

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

29.4%

JSON

Next.js is a React framework. Versions of Next.js between 10.0.0 and 11.0.0 contain a cross-site scripting vulnerability. In order for an instance to be affected by the vulnerability, the next.config.js file must have images.domains array assigned and the image host assigned in images.domains must allow user-provided SVG. If the next.config.js file has images.loader assigned to something other than default or the instance is deployed on Vercel, the instance is not affected by the vulnerability. The vulnerability is patched in Next.js version 11.1.1.

CNA Affected

[
  {
    "product": "next.js",
    "vendor": "vercel",
    "versions": [
      {
        "status": "affected",
        "version": ">= 10.0.0, < 11.1.1"
      }
    ]
  }
]