CVE Explorer

CVE-2026-49853

Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, SimpleAsyncHTTPClient shallow-copied redirected requests and removed only the Host header, leaving Authorization, auth_username, auth_password, and auth_mode in place when a redirect changed scheme, host, or port. This issue is fixed in version 6.5.6.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f5f3d8caa42f76d516ffe7b8c5057829c2e6dc8380ef256fc2c642331bb9c6fb

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"tornado","vendor":"tornadoweb","versions":[{"status":"affected","version":"< 6.5.6"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:027bc42c0a9f1d69b635f408a8162ced08dbe399bdfaa4dd00d1c6cf94ee51b8 · sha256:945258944cb3231f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:027bc42c0a9f1d69b635f408a8162ced08dbe399bdfaa4dd00d1c6cf94ee51b8 · sha256:945258944cb3231f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:027bc42c0a9f1d69b635f408a8162ced08dbe399bdfaa4dd00d1c6cf94ee51b8 · sha256:945258944cb3231f… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions

{"name":"https://github.com/tornadoweb/tornado/commit/aba2569f7ed7a6bdbef816658fb6b7182531b751","tags":["x_refsource_MISC"],"url":"https://github.com/tornadoweb/tornado/commit/aba2569f7ed7a6bdbef816658fb6b7182531b751"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:027bc42c0a9f1d69b635f408a8162ced08dbe399bdfaa4dd00d1c6cf94ee51b8 · sha256:945258944cb3231f… · /containers/cna/references/2

{"name":"https://github.com/tornadoweb/tornado/pull/3626","tags":["x_refsource_MISC"],"url":"https://github.com/tornadoweb/tornado/pull/3626"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:027bc42c0a9f1d69b635f408a8162ced08dbe399bdfaa4dd00d1c6cf94ee51b8 · sha256:945258944cb3231f… · /containers/cna/references/1

{"name":"https://github.com/tornadoweb/tornado/releases/tag/v6.5.6","tags":["x_refsource_MISC"],"url":"https://github.com/tornadoweb/tornado/releases/tag/v6.5.6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:027bc42c0a9f1d69b635f408a8162ced08dbe399bdfaa4dd00d1c6cf94ee51b8 · sha256:945258944cb3231f… · /containers/cna/references/3

{"name":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-3x9g-8vmp-wqvf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-3x9g-8vmp-wqvf"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:027bc42c0a9f1d69b635f408a8162ced08dbe399bdfaa4dd00d1c6cf94ee51b8 · sha256:945258944cb3231f… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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