{"url":"http://public2.vulnerablecode.io/api/packages/57445?format=json","purl":"pkg:pypi/tornado@6.4.2","type":"pypi","namespace":"","name":"tornado","version":"6.4.2","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"6.5.5","latest_non_vulnerable_version":"6.5.5","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/30391?format=json","vulnerability_id":"VCID-62bx-a5uf-j3b4","summary":"Tornado vulnerable to excessive logging caused by malformed multipart form data\n### Summary\n\nWhen 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.\n\n### Affected versions\n\nAll versions of Tornado prior to 6.5 are affected. The vulnerable parser is enabled by default.\n\n### Solution\n\nUpgrade to Tornado version 6.5. In the meantime, risk can be mitigated by blocking `Content-Type: multipart/form-data` in a proxy.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-47287.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-47287.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2025-47287","reference_id":"","reference_type":"","scores":[{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78714","published_at":"2026-05-05T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78571","published_at":"2026-04-02T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78603","published_at":"2026-04-04T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78584","published_at":"2026-04-07T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78609","published_at":"2026-04-08T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78616","published_at":"2026-04-09T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.7864","published_at":"2026-04-11T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78622","published_at":"2026-04-12T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78614","published_at":"2026-04-13T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78643","published_at":"2026-04-16T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78641","published_at":"2026-04-18T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78638","published_at":"2026-04-21T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78668","published_at":"2026-04-24T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78676","published_at":"2026-04-26T12:55:00Z"},{"value":"0.01164","scoring_system":"epss","scoring_elements":"0.78693","published_at":"2026-04-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2025-47287"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-47287","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-47287"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/tornadoweb/tornado","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/tornadoweb/tornado"},{"reference_url":"https://github.com/tornadoweb/tornado/commit/b39b892bf78fe8fea01dd45199aa88307e7162f3","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-16T13:36:22Z/"}],"url":"https://github.com/tornadoweb/tornado/commit/b39b892bf78fe8fea01dd45199aa88307e7162f3"},{"reference_url":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-7cx3-6m66-7c5m","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-05-16T13:36:22Z/"}],"url":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-7cx3-6m66-7c5m"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00038.html","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00038.html"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47287","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47287"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1105886","reference_id":"1105886","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1105886"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2366703","reference_id":"2366703","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2366703"},{"reference_url":"https://github.com/advisories/GHSA-7cx3-6m66-7c5m","reference_id":"GHSA-7cx3-6m66-7c5m","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-7cx3-6m66-7c5m"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8135","reference_id":"RHSA-2025:8135","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8135"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8136","reference_id":"RHSA-2025:8136","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8136"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8223","reference_id":"RHSA-2025:8223","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8223"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8226","reference_id":"RHSA-2025:8226","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8226"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8254","reference_id":"RHSA-2025:8254","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8254"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8279","reference_id":"RHSA-2025:8279","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8279"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8290","reference_id":"RHSA-2025:8290","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8290"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8291","reference_id":"RHSA-2025:8291","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8291"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8323","reference_id":"RHSA-2025:8323","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8323"},{"reference_url":"https://access.redhat.com/errata/RHSA-2025:8664","reference_id":"RHSA-2025:8664","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2025:8664"},{"reference_url":"https://usn.ubuntu.com/7547-1/","reference_id":"USN-7547-1","reference_type":"","scores":[],"url":"https://usn.ubuntu.com/7547-1/"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/71181?format=json","purl":"pkg:pypi/tornado@6.5","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-be89-uuxa-fyb5"},{"vulnerability":"VCID-jbwv-ayru-8fgm"},{"vulnerability":"VCID-nq24-395d-wuar"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:pypi/tornado@6.5"}],"aliases":["CVE-2025-47287","GHSA-7cx3-6m66-7c5m"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-62bx-a5uf-j3b4"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/23864?format=json","vulnerability_id":"VCID-be89-uuxa-fyb5","summary":"Tornado is vulnerable to DoS due to too many multipart parts\nIn 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. \n\nTornado 6.5.5 introduces new limits on the size and complexity of multipart bodies, including a default limit of 100 parts per request. These limits are configurable if needed; see `tornado.httputil.ParseMultipartConfig`. It is also now possible to disable `multipart/form-data` parsing entirely if it is not required for the application.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31958.json","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31958.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-31958","reference_id":"","reference_type":"","scores":[{"value":"0.00027","scoring_system":"epss","scoring_elements":"0.07483","published_at":"2026-05-05T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08392","published_at":"2026-04-07T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08476","published_at":"2026-04-11T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08482","published_at":"2026-04-09T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08419","published_at":"2026-04-02T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08464","published_at":"2026-04-08T12:55:00Z"},{"value":"0.0003","scoring_system":"epss","scoring_elements":"0.08472","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09182","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09304","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09181","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.0929","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09299","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09337","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09383","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09332","published_at":"2026-04-21T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-31958"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31958","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31958"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/tornadoweb/tornado","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"8.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/tornadoweb/tornado"},{"reference_url":"https://github.com/tornadoweb/tornado/commit/119a195e290c43ad2d63a2cf012c29d43d6ed839","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"8.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/tornadoweb/tornado/commit/119a195e290c43ad2d63a2cf012c29d43d6ed839"},{"reference_url":"https://github.com/tornadoweb/tornado/releases/tag/v6.5.5","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"8.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/tornadoweb/tornado/releases/tag/v6.5.5"},{"reference_url":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-qjxf-f2mg-c6mc","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"8.7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-12T19:55:43Z/"}],"url":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-qjxf-f2mg-c6mc"},{"ref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has incomplete validation of cookie attributes\nValues passed to the `domain`, `path`, and `samesite` arguments of `RequestHandler.set_cookie` were not completely validated in versions of Tornado prior to 6.5.5. In particular, semicolons would be allowed, which could be used to inject attacker-controlled values for other cookie 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This parsing occurs in the event loop thread and may block the processing of other requests.\n\nSee also CVE-2024-7592 for a similar vulnerability in 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