CVE-2021-47957

Description

Cookie Law Bar 1.2.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting unsanitized input to the Bar Message field. Attackers can inject script payloads through the plugin settings page that execute in the browsers of all WordPress users viewing the site, enabling cookie theft and sensitive data exfiltration.

Overview

State

—

Assigner (CNA)

—

CVSS severity

medium

CVSS score

6.4 / 10

CVSS vector

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

Effective score

6.4 / 10 MEDIUM source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2021-47957

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-05-16 16:16:22 UTC

NVD last modified

2026-05-18 17:44:03 UTC

NVD CVSS v3.1

6.4 / 10 MEDIUM source: disclosure@vulncheck.com

NVD CVSS vector

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

Exploitability subscore

3.1 / 10

Impact subscore

2.7 / 10

EPSS score

0.0003 (probability of exploitation in next 30 days)

EPSS percentile

10.24% vs all CVEs — higher = more likely to be exploited, as of 2026-05-24

NVD-assigned CWE(s): CWE-79 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2021-34825

Assigner

VulnCheck

Published

May 16, 2026, 3:26:09 PM

Updated

May 24, 2026, 1:37:14 AM

EUVD base score (CVSS 4.0)

5.1 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

EUVD-reported EPSS

0.0300

Vendors

Cookielawinfo

Products

Cookie Law Bar (1.2.1)

Aliases

GHSA-fwf2-qq89-w6p9

ENISA description: Cookie Law Bar 1.2.1 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious scripts by submitting unsanitized input to the Bar Message field. Attackers can inject script payloads through the plugin settings page that execute in the browsers of all WordPress users viewing the site, enabling cookie theft and sensitive data exfiltration.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (7)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nvd.nist.gov/vuln/detail/CVE-2021-47957 tenable:nvd.nist.gov
• https://wordpress.org/plugins/cookie-law-bar/ tenable:wordpress.org
• https://www.cookielawinfo.com/wordpress-plugin/ tenable:www.cookielawinfo.com
• https://www.cve.org/CVERecord?id=CVE-2021-47957 tenable:www.cve.org
• https://www.exploit-db.com/exploits/49905 tenable:www.exploit-db.com
• https://www.first.org/epss/ tenable:www.first.org
• https://www.vulncheck.com/advisories/wordpress-plugin-cookie-law-bar-stored-xss-via-clb-bar-msg tenable:www.vulncheck.com

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  web:www.computerworld.com

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• Oracle Critical Patch Update Advisory - April 2026
  web:www.oracle.com

  This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

  2026-05-26 03:07 UTC
• Patch Tuesday - June 2025 - Rapid7 Blog
  web:www.rapid7.com

  Microsoft is addressing 67 vulnerabilities this June 2025 Patch Tuesday. Learn more about the findings in this Patch Tuesday.

  2026-05-26 03:07 UTC

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