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CVE-2024-52804

python-tornado: Tornado has HTTP cookie parsing DoS vulnerability

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · November 23, 2024

Updated · August 6, 2026

Description

A flaw was found in Tornado's HTTP cookie parsing algorithm. This vulnerability allows excessive CPU consumption via maliciously crafted cookie headers due to Quadratic complexity, potentially blocking the processing of other requests and leading to the loss of availability of the system.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-1333 · Inefficient Regular Expression Complexity