CVE-2021-47957
CVE-2021-47957 is a medium-severity vulnerability with a CVSS 3.x base score of 6.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.4)
- CVSS v4: 5.1
- EPSS exploit prediction: 0% (10th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2021-34825
- Weakness: CWE-79
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-47957?
- 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.
- How severe is CVE-2021-47957?
- CVE-2021-47957 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-47957 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2021-47957?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2021-47957 have an EU (EUVD) identifier?
- Yes. CVE-2021-47957 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34825.
- When was CVE-2021-47957 published?
- CVE-2021-47957 was published on 2026-05-16 and last updated on 2026-06-17.
References
- https://wordpress.org/plugins/cookie-law-bar/
- https://www.cookielawinfo.com/wordpress-plugin/
- https://www.exploit-db.com/exploits/49905
- https://www.vulncheck.com/advisories/wordpress-plugin-cookie-law-bar-stored-xss-via-clb-bar-msg
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