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fflate unzipSync can enter an infinite loop when parsing malformed ZIP64 archives

🗓️ 22 Jul 2026 09:32:13Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 5 Views

Infinite loop DoS in fflate through 0.8.2 via ZIP64 sentinel with missing extra field tag.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-45820
22 Jul 202606:57
attackerkb
circl
Circl
CVE-2026-45820
24 Jul 202602:48
circl
cve
CVE
CVE-2026-45820
22 Jul 202606:57
cve
cvelist
Cvelist
CVE-2026-45820
22 Jul 202606:57
cvelist
euvd
EUVD
EUVD-2026-47616
22 Jul 202606:57
euvd
nvd
NVD
CVE-2026-45820
22 Jul 202608:16
nvd
osv
OSV
GHSA-PX8P-9VWX-VF98 fflate unzipSync can enter an infinite loop when parsing malformed ZIP64 archives
22 Jul 202609:32
osv
osv
OSV
MINI-23QH-WMMJ-6J6H
4 Sep 202614:31
osv
osv
OSV
MINI-384G-V8WH-9736
4 Sep 202614:31
osv
osv
OSV
MINI-48RF-2G47-4F6W
4 Sep 202614:31
osv
Rows per page
Vulners
Node
OR
101arrowzfflateRange0.8.00.8.3npm
101arrowzfflateRange0.7.00.7.5npm
101arrowzfflateRange0.6.00.6.11npm
101arrowzfflateRange0.5.00.5.4npm
101arrowzfflateRange0.4.50.4.9npm

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03 Sep 2026 14:58Current
CVSS 3.17.5
CVSS 48.7
EPSS0.00278
SSVC
5