CVE-2026-122146
High
Description
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.
SeverityHigh
CVSS7.3
Exploit probability22. percentile0.3%
Product101arrowz Fflate
PublishedNov 5, 2026
First seenNov 5, 2026
Weakness typeCWE-119Memory buffer bounds error
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| 101arrowz fflate | 0.8.0, 0.8.1, 0.8.2, 0.8.3 | — |
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