csp-bypass-advanced

Bypassing Content Security Policy when script-src blocks XSS involves exploiting missing high-impact directives like base-uri or form-action, or leveraging fallback gaps where directives do not inherit from default-src, enabling alternative injection or policy misconfiguration abuse.

Exfiltrating data when CSP restricts connect-src and img-src requires using alternative channels like DNS, WebRTC, CSS, or form-based vectors that Content Security Policy cannot fully block, bypassing traditional network-level source restrictions.

Bypassing strict-dynamic and nonce-based Content Security Policy trust models involves leveraging framework-specific runtime behaviors in Angular or Vue, or exploiting script-source escalation techniques to achieve execution when policy constraints are present.

CSP directive fallback to default-src impacts web application security testing by creating high-risk gaps, because directives like base-uri and form-action do not inherit default-src, leaving exploitable paths for injection and data theft.

Limitations of CSP bypass techniques for framework-specific gadgets include strict reliance on Angular or Vue template and runtime behaviors, meaning bypass paths may fail if the target application changes its framework version or removes vulnerable runtime configurations.