CVE-2026-45820: 101arrowz fflate, отказ на услуга

Описание

Оригинално описание

fflate through 0.8.2 is vulnerable to denial of service via an infinite loop in unzipSync(). A crafted ZIP archive with a central directory entry declaring compressed_size=0xFFFFFFFF (ZIP64 sentinel) but missing the required ZIP64 extra field tag 0x0001 causes z64e() to loop indefinitely due to out-of-bounds reads returning undefined, which coerces to 0, keeping the loop condition permanently true.

Засегнати продукти

• 101arrowz fflate: 0.4.5 до 0.4.8; 0.5.0 до 0.5.3; 0.6.0 до 0.6.10; 0.7.0 до 0.7.4; 0.8.0 до 0.8.2

Вид слабост

• CWE-835 Loop with Unreachable Exit Condition
• CWE-400 Неконтролирано потребление на ресурси

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-45820
• https://nvd.nist.gov/vuln/detail/CVE-2026-45820
• https://github.com/101arrowz/fflate/blob/f7873560ad229c22c4b23b06c6a3806ffde77569/src/index.ts#L2714
• https://www.npmjs.com/package/fflate