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| purl | pkg:deb/debian/python-tornado@6.2.0-3%2Bdeb12u4 |
| Vulnerability | Summary | Fixed by |
|---|---|---|
|
VCID-96r3-89by-dyer
Aliases: CVE-2026-31958 GHSA-qjxf-f2mg-c6mc PYSEC-2026-140 |
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). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5. |
Affected by 0 other vulnerabilities. |
|
VCID-9vcz-3gme-b3bm
Aliases: CVE-2026-35536 GHSA-fqwm-6jpj-5wxc |
tornado: Tornado: Cookie attribute injection due to improper handling of cookie arguments |
Affected by 0 other vulnerabilities. |
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-27ab-kc1z-2fcv | Tornado has an HTTP cookie parsing DoS vulnerability The algorithm used for parsing HTTP cookies in Tornado versions prior to 6.4.2 sometimes has quadratic complexity, leading to excessive CPU consumption when parsing maliciously-crafted cookie headers. This parsing occurs in the event loop thread and may block the processing of other requests. See also CVE-2024-7592 for a similar vulnerability in cpython. |
CVE-2024-52804
GHSA-8w49-h785-mj3c |
| VCID-3s9v-tggu-cfdr | tornado: Tornado Quadratic DoS via Repeated Header Coalescing |
CVE-2025-67725
|
| VCID-6uus-p5xs-huhh | tornado: Tornado Header Injection and XSS via reason argument |
CVE-2025-67724
|
| VCID-96r3-89by-dyer | 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). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5. |
CVE-2026-31958
GHSA-qjxf-f2mg-c6mc PYSEC-2026-140 |
| VCID-9vcz-3gme-b3bm | tornado: Tornado: Cookie attribute injection due to improper handling of cookie arguments |
CVE-2026-35536
GHSA-fqwm-6jpj-5wxc |
| VCID-a4ry-gnvn-e3a1 | 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 crafted URL. |
CVE-2023-28370
GHSA-hj3f-6gcp-jg8j PYSEC-2023-75 |
| VCID-hyxq-9kuv-k3dt | Tornado vulnerable to excessive logging caused by malformed multipart form data When Tornado's ``multipart/form-data`` parser encounters certain errors, it logs a warning but continues trying to parse the remainder of the data. This allows remote attackers to generate an extremely high volume of logs, constituting a DoS attack. This DoS is compounded by the fact that the logging subsystem is synchronous. |
CVE-2025-47287
GHSA-7cx3-6m66-7c5m |
| VCID-q8ws-prs8-g7ef | tornado: Tornado Quadratic DoS via Crafted Multipart Parameters |
CVE-2025-67726
|