CVE-2023-4021

2023-10-2007:29:39

Wordfence

www.cve.org

cve-2023-4021

stored cross-site scripting

google api key

calendar id

input sanitization

output escaping

authenticated attackers

administrator-level permissions

multi-site installations

unfiltered_html

CVSS3

4.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

18.7%

JSON

The Modern Events Calendar lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Google API key and Calendar ID in versions up to, but not including, 7.1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

CNA Affected

[
  {
    "vendor": "webnus/",
    "product": "Modern Events Calendar Lite",
    "versions": [
      {
        "version": "*",
        "status": "affected",
        "lessThan": "7.1.0",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]