CVE-2021-36873

WordPress iQ Block Country plugin <= 1.2.11 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability

Authenticated Persistent Cross-Site Scripting (XSS) vulnerability in WordPress iQ Block Country plugin (versions <= 1.2.11). Vulnerable parameter: &blockcountry_blockmessage.

Affected

Webence · iQ Block Country

CVSS v3.1 NVD

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 PATCHSTACK

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

CVSS v2.0 NVD

3.5 LOWAV:N/AC:M/Au:S/C:N/I:P/A:N

EPSS

1.21% chance of exploitation in the next 30 days, 68th percentile

Nuclei

medium · CWE-79

Published

2021-09-23

Updated

2026-04-28

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-36873.yaml

Security advisories

• https://patchstack.com/database/vulnerability/iq-block-country-/wordpress-iq-block-countr…
• https://wordpress.org/plugins/iq-block-country/#developers

References

• CVE Record
• NVD entry