AIKIDO-2025-10879
astro is vulnerable to Authentication Bypass Using an Alternate Path or Channel
80
High Risk
This Affects:
astroTL;DR
Affected versions of this package are vulnerable to authentication bypass through double-URL encoded paths. An attacker could use multi-level URL encoding (e.g. /%2561dmin) to access routes that should be behind authentication. The patch fixes this by decoding pathnames and rejecting requests that contain leftover percent-encoded sequences after decoding.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
astro is vulnerable to Authentication Bypass Using an Alternate Path or Channel in versions 3.5.6 - 5.16.2.
How to fix this
Upgrade the astro library to the patch version.
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