Session ID Leakage via Referer Header

Anandhu Krishnan
Published on
14 May 2024


A malicious hyperlink can potentially leak sensitive session IDs by exposing the target URL within the Referer header.


To mitigate this risk, ensure that any sensitive session IDs are isolated and secured within a cookie or token. Additionally, consider implementing referer blocking or rewriting to prevent sensitive information from being exposed.

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Written by
Anandhu Krishnan
Anandhu Krishnan
Lead Engineer
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