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Caddy: Unicode case-folding length expansion causes incorrect split_path index in FastCGI transport

🗓️ 24 Feb 2026 20:39:08Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 4 Views

Unicode lowercasing expands bytes and breaks the FastCGI split index, risking PHP path misalignment.

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27 Feb 2026 19:55Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.19.8
CVSS 49.3
EPSS0.00542
SSVC
4