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Add opt-in CSP embedding and plugin restrictions #1440

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Add opt-in CSP embedding and plugin restrictions #1440

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13 changes: 13 additions & 0 deletions wicket-core/src/main/java/org/apache/wicket/csp/CSPHeaderConfiguration.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,8 +21,10 @@
import static org.apache.wicket.csp.CSPDirective.CONNECT_SRC;
import static org.apache.wicket.csp.CSPDirective.DEFAULT_SRC;
import static org.apache.wicket.csp.CSPDirective.FONT_SRC;
import static org.apache.wicket.csp.CSPDirective.FRAME_ANCESTORS;
import static org.apache.wicket.csp.CSPDirective.IMG_SRC;
import static org.apache.wicket.csp.CSPDirective.MANIFEST_SRC;
import static org.apache.wicket.csp.CSPDirective.OBJECT_SRC;
import static org.apache.wicket.csp.CSPDirective.REPORT_URI;
import static org.apache.wicket.csp.CSPDirective.SCRIPT_SRC;
import static org.apache.wicket.csp.CSPDirective.STYLE_SRC;
Expand Down Expand Up @@ -131,6 +133,17 @@ public CSPHeaderConfiguration strict()
.add(BASE_URI, SELF);
}

/**
* Hardens the CSP configuration by adding {@code frame-ancestors 'self'} to prevent embedding
* (clickjacking) and {@code object-src 'none'} to disable plugin execution.
*
* @return {@code this} for chaining.
*/
public CSPHeaderConfiguration enableStrictEmbeddingProtection()
{
return add(FRAME_ANCESTORS, SELF).add(OBJECT_SRC, NONE);
}

/**
* Configures the CSP to report violations back at the application.
*
Expand Down