High severity7.5NVD Advisory· Published Oct 1, 2026· Updated Oct 1, 2026

CVE-2026-103262

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

Tornadoweb/Tornadollm-fuzzy
Range: <6.5.9

Patches

Vulnerability mechanics

References

github.com/tornadoweb/tornado/commit/e412435febba4569c552c5c9054f1bf92bd171a9nvd
github.com/tornadoweb/tornado/security/advisories/GHSA-chx6-46f5-w4vpnvd
www.vulncheck.com/advisories/tornado-before-6.5.9-denial-of-service-via-curlasynchttpclientnvd

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cvss	0.488
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exploit	0.000
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patch	-0.070
ransomware	0.000