CVE-2021-4252

6.1 mediumEPSS 0.5%

Medium (6.1) in wp-ban project wp-ban. EPSS 0.5% chance of exploitation in the next 30 days.

A vulnerability, which was classified as problematic, has been found in WP-Ban. This issue affects the function toggle_checkbox of the file ban-options.php. The manipulation of the argument $_SERVER["HTTP_USER_AGENT"] leads to cross site scripting. The attack may be initiated remotely. The name of the patch is 13e0b1e922f3aaa3f8fcb1dd6d50200dd693fd76. It is recommended to apply a patch to fix this issue. The identifier VDB-216209 was assigned to this vulnerability.

Severity

CVSS 3.1

6.1 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
CWE: CWE-707
Published: 2022-12-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

wp-ban_project:wp-ban

References

https://github.com/lesterchan/wp-ban/commit/13e0b1e922f3aaa3f8fcb1dd6d50200dd693fd76
https://github.com/lesterchan/wp-ban/pull/11
https://vuldb.com/?id.216209
https://github.com/lesterchan/wp-ban/commit/13e0b1e922f3aaa3f8fcb1dd6d50200dd693fd76
https://github.com/lesterchan/wp-ban/pull/11

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