CVE-2021-47957 WordPress Plugin Cookie Law Bar 1.2.1 Stored XSS via clb_bar_msg
Authenticated attackers can inject malicious scripts via the Bar Message field, leading to cookie theft and data exfiltration for all site visitors.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47957?
CVE-2021-47957 is a medium-severity cross-site scripting vulnerability in Cookielawinfo Cookie Law Bar, published on 16 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2021-47957?
How do I fix CVE-2021-47957?
No fix has been published for CVE-2021-47957 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-47957 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47957 exists.
Sources
Also known as GHSA-fwf2-qq89-w6p9.