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GHSA-PR2V-JX2C-WG9F Tornado vulnerable to Header Injection and XSS via reason argument

🗓️ 20 Jul 2026 18:55:11Reported by GoogleType 
osv
 osv🔗 osv.dev👁 4 Views

Tornado before 6.5.3 allows header injection and XSS via untrusted reason in HTTPError, set_status.

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IBM Security Bulletins		Security Bulletin: Vulnerabilities exists in IBM Netezza Software
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Tenable Nessus		Amazon Linux 2 : python-tornado, --advisory ALAS2-2025-3106 (ALAS-2025-3106)
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20 Jul 2026 19:00Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.15.4
EPSS0.00203
tornadoheader injectioncross site scriptinguntrusted inputreason argumenthttp errorset status
4