CVE-2021-39202

CVSS V2 Low 3.5 CVSS V3 Medium 5.4
Description
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions the widgets editor introduced in WordPress 5.8 beta 1 has improper handling of HTML input in the Custom HTML feature. This leads to stored XSS in the custom HTML widget. This has been patched in WordPress 5.8. It was only present during the testing/beta phase of WordPress 5.8.
Overview
  • CVE ID
  • CVE-2021-39202
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-09-09T22:15:09
  • Last Modified Date
  • 2021-09-24T13:53:00
Weakness Enumerations
CWE URL
CWE-79 http://cwe.mitre.org/data/definitions/79.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:wordpress:wordpress:5.8:beta1:*:*:*:*:*:* 1 OR
cpe:2.3:a:wordpress:wordpress:5.8:beta2:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:S/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 3.5
  • Severity
  • LOW
  • Exploitability Score
  • 6.8
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • REQUIRED
  • Scope
  • CHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 5.4
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.3
  • Impact Score
  • 2.7
References
Reference URL Reference Tags
https://hackerone.com/reports/1222797 Permissions Required
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-fr6h-3855-j297 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-39202
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39202
History
Created Old Value New Value Data Type Notes
2022-05-10 06:53:35 Added to TrackCVE
2022-12-05 10:18:39 2021-09-09T22:15Z 2021-09-09T22:15:09 CVE Published Date updated
2022-12-05 10:18:39 2021-09-24T13:53:00 CVE Modified Date updated
2022-12-05 10:18:40 Analyzed Vulnerability Status updated