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101arrowz CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

MEDIUM 101arrowz CVE published 2026-07-22

CVE-2026-45820

CVE-2026-45820 is a denial-of-service vulnerability in fflate through version 0.8.2. The vulnerability is caused by an infinite loop in the unzipSync() function. This occurs when a crafted ZIP archive with a central directory entry declaring compressed_size=0xFFFFFFFF (ZIP64 sentinel) but missing the required ZIP64 extra field tag 0x0001 is processed, leading to out-of-bounds reads that return undefined, [truncated]