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CVE-2026-122146— 101arrowz fflate index.mjs unzipSync memory corruption

Quick assessment

Affected
101arrowz fflate
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 101arrowz 的 fflate 库（0.8.3 及更早版本）中发现了一个安全漏洞。该问题影响 esm/index.mjs 文件中的 unzipSync 函数。攻击者可通过恶意操作引发内存损坏，并能够远程发起攻击。该漏洞的利用代码已公开，可被用于实际攻击。厂商已在此披露早期被联系，但至今未作出任何回应。

CVSS 7.3 · High
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I. Basic Information for CVE-2026-122146

Vulnerability Information
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Vulnerability Title
101arrowz fflate index.mjs unzipSync memory corruption
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
101arrowz fflate 0.8.0 cpe:2.3:a:101arrowz:fflate:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-122146

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III. Intelligence Information for CVE-2026-122146

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Other References for CVE-2026-122146 (5)

IV. Related Vulnerabilities

Same product: fflate
Same vendor: 101arrowz
Same weakness: CWE-119