CVE-2026-122146

EUVD-2026-117202
A weakness has been identified in 101arrowz fflate up to 0.8.3. This issue affects the function unzipSync of the file esm/index.mjs. This manipulation causes memory corruption. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulDBCNA
7.3 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 22.09%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
101arrowzfflate
0.8.0
CNA
101arrowzfflate
0.8.1
CNA
101arrowzfflate
0.8.2
CNA
101arrowzfflate
0.8.3
CNA
Common Weakness Enumeration
References
https://github.com/ictrun/java/issues/9
https://vuldb.com/cve/CVE-2026-122146
https://vuldb.com/submit/1027352
https://vuldb.com/vuln/431150
https://vuldb.com/vuln/431150/cti