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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-103262

Tornado before 6.5.9 Denial of Service via CurlAsyncHTTPClient

Description

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, causing the application process to be killed by out-of-memory conditions.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

tornadoweb tornado

Default version status: unaffected

  • 0 to < 6.5.9affected
  • 6.5.9unaffected
pkg:pypi/tornado

References