CVE-2021-43787 XSS via prototype pollution

2021-11-2919:30:11

CWE-1321

CWE-79

GitHub_M

www.cve.org

9 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

42.5%

JSON

Nodebb is an open source Node.js based forum software. In affected versions a prototype pollution vulnerability in the uploader module allowed a malicious user to inject arbitrary data (i.e. javascript) into the DOM, theoretically allowing for an account takeover when used in conjunction with a path traversal vulnerability disclosed at the same time as this report. The vulnerability has been patched as of v1.18.5. Users are advised to upgrade as soon as possible.

CNA Affected

[
  {
    "product": "NodeBB",
    "vendor": "NodeBB",
    "versions": [
      {
        "status": "affected",
        "version": ">= 1.15.5, < 1.18.5"
      }
    ]
  }
]