101arrowz Fflate vulnerabilities

🔔 Create alert RSS Version checker

Published CVEs affecting 101arrowz Fflate: 1 record(s), with affected versions and fixes.
cpe:2.3:a:101arrowz:fflate

CVE-2026-45820 High · 7.5 CWE-400 Jul 22, 2026

Uncontrolled Resource Consumption in 101arrowz Fflate

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.