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CVE-2026-103263

Medium priority
Needs evaluation

Tornado before 6.5.9 contains a path traversal vulnerability in StaticFileHandler that follows symbolic links inside the static root without confirming the resolved target stays within it. When a symlink pointing outside the...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-103262

Medium priority
Needs evaluation

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...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-103261

Medium priority
Needs evaluation

Tornado before 6.5.9 fails to limit the number of query string fields in HTTPServerRequest.__init__, allowing remote attackers to cause event-loop stalling by sending requests with thousands of query parameters. Attackers can send...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-91992

Medium priority
Needs evaluation

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...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-91991

Medium priority
Needs evaluation

Tornado before 6.5.8 contains an incomplete fix for cookie attribute injection that allows attackers to inject arbitrary cookie attributes by passing capitalized or legacy keyword arguments to set_cookie. Attackers can embed...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-91990

Medium priority
Needs evaluation

Tornado before 6.5.8 contains a memory amplification vulnerability in parse_multipart_form_data that splits multipart data before validating the max_parts limit. Attackers can send crafted multipart requests with many parts to...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2024-58384

Medium priority
Needs evaluation

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...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2024-14029

Medium priority
Needs evaluation

Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no message body and parsing the chunked body as a subsequent request. Attackers can exploit this inconsistency when Tornado is...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2023-54397

Medium priority
Needs evaluation

Tornado before 6.3.3 contains an HTTP request smuggling vulnerability due to improper parsing of Content-Length headers accepting non-standard characters. Attackers can send crafted HTTP requests with these characters to bypass...

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-82397

Medium priority
Needs evaluation

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.8, Tornado parses application/x-www-form-urlencoded request bodies with urllib.parse.parse_qs in tornado/escape.py without passing max_num_fields....

1 affected package

python-tornado

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
python-tornado Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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