CVE-2026-103262

Tornado versions before 6.5.9 contain an unbounded memory accumulation vulnerability in CurlAsyncHTTPClient that allows remote attackers to cause denial of service by sending a compressed response. Attackers can send a gzip-encoded decompression bomb that accumulates in memory without size limits...

CVE-2026-103262

Tornado versions before 6.5.9 are vulnerable to a Denial of Service (DoS) attack via the CurlAsyncHTTPClient component. The root cause is an unbounded memory accumulation vulnerability where the client fails to enforce limits on incoming response sizes. A remote malicious server can exploit this ...