CVE-2026-122146
HighCVSS 7.3Summary
A weakness has been identified in the fflate library up to version 0.8.3, affecting the unzipSync function in esm/index.mjs. The manipulation causes memory corruption and can be triggered remotely. The exploit has been publicly disclosed and the vendor did not respond to the report.
Risk Assessment
A remote attacker can use the publicly available exploit to cause memory corruption in applications using fflate for decompression, potentially leading to crashes or code execution.
Recommendation
Upgrade fflate to a version newer than 0.8.3 or apply a workaround if no fix is available. Monitor applications using unzipSync for unusual input data.
Other vulnerabilities in fflate
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS