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[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":3,"type":"x","order":2,"pct":60,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":2,"type":"x","order":4,"pct":40,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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Debian 11 python-tornado Critical Custom Phrases DoS CVE-2025-67724

Tornado is a scalable, non-blocking Python web framework and asynchronous networking library. CVE-2025-67724 Custom reason phrases can cause multiple vulnerabilities (like XSS, header injection, ...) due to being used unescaped in HTTP headers.. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4461-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/lts/security/ Daniel Leidert February 01, 2026 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : python-tornado Version : 6.1.0-1+deb11u3 CVE ID : CVE-2025-67724 CVE-2025-67725 CVE-2025-67726 Debian Bug : 1122660 1122661 1122663 Tornado is a scalable, non-blocking Python web framework and asynchronous networking library. CVE-2025-67724 Custom reason phrases can cause multiple vulnerabilities (like XSS, header injection, ...) due to being used unescaped in HTTP headers. CVE-2025-67725 A single maliciously crafted HTTP request can cause a possible DoS due to quadratic performance of repeated header lines. CVE-2025-67726 An inefficient algorithm when parsing parameters for HTTP header values can potentially cause a DoS. For Debian 11 bullseye, these problems have been fixed in version 6.1.0-1+deb11u3. We recommend that you upgrade your python-tornado packages. For the detailed security status of python-tornado please refer to its security tracker page at: https://security-tracker.debian.org/tracker/source-package/python-tornado Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS . Upgrade python-tornado in Debian for several critical fixes against custom reason phrase issues and potential DoS attacks.. Debian Tornado XSS DoS. . Severity: Critical. LinuxSecurity.com Team

Calendar%202 Feb 01, 2026 Critical Debian LTS
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157
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[{"id":506,"title":"Yes \u2014 critical security patches should install automatically.","votes":0,"type":"x","order":1,"pct":0,"resources":[]},{"id":507,"title":"No \u2014 every update should be tested before deployment.","votes":3,"type":"x","order":2,"pct":60,"resources":[]},{"id":508,"title":"Only critical vulnerabilities should auto-install.","votes":0,"type":"x","order":3,"pct":0,"resources":[]},{"id":509,"title":"I patch when Reddit starts panicking.","votes":2,"type":"x","order":4,"pct":40,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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