CVE-2025-47287
highPriorität · verfolgen · 0EPSS 0.007 · 55. PerzentilDEEURUUSEPSS · bewertet 2026-10-26
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. 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. All versions of Tornado prior to 6.5.0 are affected. The vulnerable parser is enabled by default. Upgrade to Tornado version 6.50 to receive a patch. As a workaround, risk can be mitigated by blocking `Content-Type: multipart/form-data` in a proxy.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.9–7.5
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (26)
Betroffene Produkte und Versionsbereiche.
Advisories (3)
Hersteller- und Ökosystem-Meldungen dazu.
- WID-SEC-W-2025-1143Red Hat Enterprise Linux (python-tornado): Schwachstelle ermöglicht Denial of ServiceDeutsch2025-05-25csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen.
- GHSA-7cx3-6m66-7c5mTornado vulnerable to excessive logging caused by malformed multipart form data2025-05-16ghsa · osvUS
### Summary 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. ### Affected versions All versions of Tornado prior to 6.5 are affected. The vulnerable parser is enabled by default. ### Solution Upgrade to Tornado version 6.5. In the meantime, risk can be mitigated by blocking `Content-Type: multipart/form-data` in a proxy.
- PYSEC-2026-1974Tornado vulnerable to excessive logging caused by malformed multipart form data2026-07-07vendor · osvUS
### Summary 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. ### Affected versions All versions of Tornado prior to 6.5 are affected. The vulnerable parser is enabled by default. ### Solution Upgrade to Tornado version 6.5. In the meantime, risk can be mitigated by blocking `Content-Type: multipart/form-data` in a proxy.
auch bekannt als (8)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (9)
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/tornadoweb/tornado/commit/b39b892bf78fe8fea01dd45199aa88307e7162f3cnnvd
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-7cx3-6m66-7c5mcnnvd
- https://github.com/tornadoweb/tornado/tagsPatchcnnvd
- https://vigilance.fr/vulnerability/Tornado-overload-via-Malformed-multipart-form-data-47246cnnvd
- https://github.com/tornadoweb/tornado/commit/b39b892bf78fe8fea01dd45199aa88307e7162f3enisa_euvd
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-7cx3-6m66-7c5menisa_euvd
- https://github.com/tornadoweb/tornado/commit/b39b892bf78fe8fea01dd45199aa88307e7162f3Patchnvd
- https://github.com/tornadoweb/tornado/security/advisories/GHSA-7cx3-6m66-7c5mVendor Advisorynvd
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