OWASPASVS 5.0 requirement

ASVS-V3.5.7 Data requiring authorization is not included in script resource responses, like javascript files, to prevent cross-site script inclusion…

L3 Published 2025 Official page ↗
Standard
OWASP ASVS 5.0
Chapter
V3 Web Frontend Security
Section
V3.5 Browser Origin Separation
Level
L3 (requirement applies from this verification level up)

Requirement

Verify that data requiring authorization is not included in script resource responses, like JavaScript files, to prevent Cross-Site Script Inclusion (XSSI) attacks.