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Facil.io (<= 0.7.6)

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CVE-2026-66729: facil.io Integer Underflow Vulnerability Leading to Server Crash

An integer underflow vulnerability in facil.io through version 0.7.6 allows unauthenticated remote attackers to crash the server process via a crafted Content-Disposition header with an empty field name, leading to a Denial of Service.

facil.io denial-of-service vulnerability web-server
1t 1c