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

A flaw was found in Tornado. A remote malicious server can cause a Denial of Service DoS when an application using the CurlAsyncHTTPClient component fetches an untrusted web address. Because the client fails to enforce limits on incoming response sizes, the attacker can return a small, highly...

CVE-2026-103262 Tornado before 6.5.9 Denial of Service via CurlAsyncHTTPClient

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 ...

EUVD-2026-90656

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...

PT-2026-103795

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...

tornado: CurlAsyncHTTPClient enforces no response-size limit — decompression bomb drives unbounded memory accumulation to OOM

An unbounded memory accumulation decompression bomb in tornado.curlhttpclient.CurlAsyncHTTPClient — the client-side sibling gap of CVE-2026-49855 — verified end-to-end on the 2026-08-15 master snapshot 6.6.dev1 and present unchanged in the latest release tag v6.5.8 and on master checked 2026-08-1...

GHSA-CHX6-46F5-W4VP tornado: CurlAsyncHTTPClient enforces no response-size limit — decompression bomb drives unbounded memory accumulation to OOM

An unbounded memory accumulation decompression bomb in tornado.curlhttpclient.CurlAsyncHTTPClient — the client-side sibling gap of CVE-2026-49855 — verified end-to-end on the 2026-08-15 master snapshot 6.6.dev1 and present unchanged in the latest release tag v6.5.8 and on master checked 2026-08-1...

OESA-2026-4037 python-tornado security update

Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived...

SUSE CVE-2024-58384

Tornado before 6.4.1 contains a CRLF injection vulnerability in CurlAsyncHTTPClient that fails to reject carriage return and line feed characters in request headers. Attackers can inject CRLF sequences into header values to inject arbitrary headers or construct entirely new HTTP requests...

AZL-103098 CVE-2026-91992 affecting package python-tornado 6.3.3-11

Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state clearing. Attackers can obtain sensitive credentials by issuing requests through the same client instance, allowing TLS certificates or proxy...

CVE-2026-91992

Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state clearing. Attackers can obtain sensitive credentials by issuing requests through the same client instance, allowing TLS certificates or proxy...

DEBIAN-CVE-2026-91992

Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state clearing. Attackers can obtain sensitive credentials by issuing requests through the same client instance, allowing TLS certificates or proxy...

DEBIAN-CVE-2024-58384

Tornado before 6.4.1 contains a CRLF injection vulnerability in CurlAsyncHTTPClient that fails to reject carriage return and line feed characters in request headers. Attackers can inject CRLF sequences into header values to inject arbitrary headers or construct entirely new HTTP requests...

CVE-2024-58384

Tornado before 6.4.1 contains a CRLF injection vulnerability in CurlAsyncHTTPClient that fails to reject carriage return and line feed characters in request headers. Attackers can inject CRLF sequences into header values to inject arbitrary headers or construct entirely new HTTP requests...

AZL-103104 CVE-2024-58384 affecting package python-tornado 6.3.3-11

Tornado before 6.4.1 contains a CRLF injection vulnerability in CurlAsyncHTTPClient that fails to reject carriage return and line feed characters in request headers. Attackers can inject CRLF sequences into header values to inject arbitrary headers or construct entirely new HTTP requests...

CVE-2026-91992

A flaw was found in Tornado's CurlAsyncHTTPClient. This vulnerability occurs because pycurl handles are reused across requests without proper state clearing. A remote attacker can exploit this by issuing requests through the same client instance, leading to the unintended persistence of sensitive...

CVE-2024-58384

A flaw was found in Tornado's CurlAsyncHTTPClient component. This vulnerability, known as CRLF Carriage Return Line Feed injection, occurs because the client fails to properly reject carriage return and line feed characters in HTTP request headers. A remote attacker can exploit this by injecting...

CVE-2026-91992 Tornado before 6.5.7 Credential Leak via Handle Reuse

Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state clearing. Attackers can obtain sensitive credentials by issuing requests through the same client instance, allowing TLS certificates or proxy...

CVE-2026-91992 Tornado before 6.5.7 Credential Leak via Handle Reuse

Tornado before 6.5.7 contains a credential leak vulnerability in CurlAsyncHTTPClient where pycurl handles are reused across requests without proper state clearing. Attackers can obtain sensitive credentials by issuing requests through the same client instance, allowing TLS certificates or proxy...