Rpb Chessboard
Monthly
Stored cross-site scripting in the RPB Chessboard WordPress plugin (all versions through 8.1.2) lets unauthenticated attackers plant persistent JavaScript through comment content that executes in the browser of anyone who later views the affected page. The novel aspect, per Wordfence, is that WordPress's normal save-time kses sanitization is bypassed because the payload uses only kses-allowed tags/attributes (an <a> element with title and href) and the dangerous attribute-breaking markup is assembled entirely at render time by the plugin's own comment_text filter. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the unauthenticated, no-interaction entry point makes it a practical drive-by injection risk.
Stored cross-site scripting in the RPB Chessboard WordPress plugin (all versions through 8.1.2) lets unauthenticated attackers plant persistent JavaScript through comment content that executes in the browser of anyone who later views the affected page. The novel aspect, per Wordfence, is that WordPress's normal save-time kses sanitization is bypassed because the payload uses only kses-allowed tags/attributes (an <a> element with title and href) and the dangerous attribute-breaking markup is assembled entirely at render time by the plugin's own comment_text filter. There is no public exploit identified at time of analysis and it is not listed in CISA KEV, but the unauthenticated, no-interaction entry point makes it a practical drive-by injection risk.