Tornadoweb
Tornadoweb Tornado: vulnerabilities and CVEs
Tornadoweb Tornado has 10 published vulnerabilities, 5 of them in the last 12 months. 0 are rated critical and 0 are listed by CISA as actively exploited.
CVEs10
Last 12 months5
Critical0
Actively exploited0
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Latest vulnerabilities
| CVE | Severity | EPSS | Active exploitation | Published | Description |
|---|---|---|---|---|---|
| CVE-2026-35536 | Medium (5.3) | 0.29% | — | Apr 3, 2026 | In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters. |
| CVE-2026-31958 | High (8.7) | 0.49% | — | Mar 11, 2026 | Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB).… |
| CVE-2025-67726 | High (7.5) | 0.53% | — | Dec 12, 2025 | Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam… |
| CVE-2025-67725 | High (7.5) | 0.56% | — | Dec 12, 2025 | Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the… |
| CVE-2025-67724 | Medium (6.1) | 0.24% | — | Dec 12, 2025 | Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML… |
| CVE-2025-47287 | High (7.5) | 0.74% | — | May 15, 2025 | Tornado is a Python web framework and asynchronous networking library. When Tornado's ``multipart/form-data`` parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data.… |
| CVE-2024-52804 | High (7.5) | 1.0% | — | Nov 22, 2024 | Tornado is a Python web framework and asynchronous networking library. The algorithm used for parsing HTTP cookies in Tornado versions prior to 6.4.2 sometimes has quadratic complexity, leading to excessive CPU… |
| CVE-2023-28370 | Medium (6.1) | 1.1% | — | May 25, 2023 | Open redirect vulnerability in Tornado versions 6.3.1 and earlier allows a remote unauthenticated attacker to redirect a user to an arbitrary web site and conduct a phishing attack by having user access a specially… |
| CVE-2014-9720 | Medium (6.5) | 2.5% | — | Jan 24, 2020 | Tornado before 3.2.2 sends arbitrary responses that contain a fixed CSRF token and may be sent with HTTP compression, which makes it easier for remote attackers to conduct a BREACH attack and determine this token via a… |
| CVE-2012-2374 | Medium (5) | 1.4% | — | May 23, 2012 | CRLF injection vulnerability in the tornado.web.RequestHandler.set_header function in Tornado before 2.2.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via crafted… |