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CVE-2025-67724

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 in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason"
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c2e321ac17a0dff084ad12d8cbd4900fe73c910ed1229b471a4d6f749f0cda86
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-644","description":"CWE-644: Improper Neutralization of HTTP Headers for Scripting Syntax","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"tornado","vendor":"tornadoweb","versions":[{"status":"affected","version":"< 6.5.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-644","description":"CWE-644: Improper Neutralization of HTTP Headers for Scripting Syntax","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/tornadoweb/tornado/commit/9c163aebeaad9e6e7d28bac1f33580eb00b0e421","tags":["x_refsource_MISC"],"url":"https://github.com/tornadoweb/tornado/commit/9c163aebeaad9e6e7d28bac1f33580eb00b0e421"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /containers/cna/references/1
{"name":"https://github.com/tornadoweb/tornado/releases/tag/v6.5.3","tags":["x_refsource_MISC"],"url":"https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /containers/cna/references/2
{"name":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-pr2v-jx2c-wg9f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-pr2v-jx2c-wg9f"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b2e5db29ca4ef4a3875d9600fb9891fc4bfcbc91563038415cf0a3f05278c83b · sha256:03930d8c288059e0… · /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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