CVE-2026-45820
Vulnerability Description
fflate through 0.8.2 is vulnerable to denial of service via an infinite loop in unzipSync(). A crafted ZIP archive with a central directory entry declaring compressed_size=0xFFFFFFFF (ZIP64 sentinel) but missing the required ZIP64 extra field tag 0x0001 causes z64e() to loop indefinitely due to out-of-bounds reads returning undefined, which coerces to 0, keeping the loop condition permanently true.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-400
Source
NVD
Vendor
101arrowz
Product
fflate
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