Security
CORS Policy Inspector
Review raw CORS response headers locally and flag risky combinations like wildcard origins with credentials.
One header per line
GETPOST
Credentialed cross-origin requests should never be paired with a wildcard origin.
Caches can behave unexpectedly for credentialed CORS responses without Vary: Origin.
Use this tool when
These are the practical situations where this workflow usually earns its keep.
You need to review raw CORS settings for risky combinations.
You want a browser-local pass before capturing the exact risky combination in the fix discussion.
You need a smaller, cleaner review surface during browser API debugging and security review.
Daily workflow acceleration
CORS Policy Inspector helps when teams need to review raw CORS settings for risky combinations without opening a heavier system or rebuilding the same transformation manually every time.
Review and handoff clarity
A focused output is useful when the next step is capturing the exact risky combination in the fix discussion and the current raw input would otherwise slow down the reviewer or teammate.
Lower-friction local handling
For browser API debugging and security review, keeping the task in the browser is helpful because the source material often does not need to leave the user’s machine just to answer this one question.
Common mistakes to avoid
These are the checks that usually keep the output useful instead of misleading.
CORS findings need application context because a technically permissive setting may still exist for a deliberate but risky reason.
Treating a lightweight local result as equivalent to a full security assessment.
Sharing the raw input after the tool already produced a safer summary or masked version.
Learn how to use this tool
Inspect raw CORS response headers and flag risky origin and credential combinations. This guide focuses on how teams use it for browser API debugging and security review when the real job is to review raw CORS settings for risky combinations.
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