{"answers":{"affected":"3 open source packages ship an affected version, including tornado. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-67724 in the wild and no public exploit code.","fix":"Upgrade tornado to 6.5.3 or later.","what":"CVE-2025-67724 is a medium-severity cross-site scripting vulnerability in tornadoweb tornado, published on 12 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-67724 and fix it if it is affected.\n\nWhat it is: CVE-2025-67724 is a medium-severity cross-site scripting vulnerability in tornadoweb tornado, published on 12 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2025-67724 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- tornado (PyPI): affected all versions; fixed in 6.5.3\n- tornado (PyPI): affected all versions; fixed in 6.5.3\n- tornado (PyPI): affected all versions; fixed in 6.5.3\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-67724/ (Markdown: https://insights.sbomify.com/CVE-2025-67724/index.md)","id":"CVE-2025-67724","markdown":"https://insights.sbomify.com/CVE-2025-67724/index.md","name":"CVE-2025-67724","record":{"aliases":["AZL-72371","AZL-72377","BELL-CVE-2025-67724","DEBIAN-CVE-2025-67724","ECHO-1f27-0b91-adc0","GHSA-pr2v-jx2c-wg9f","MINI-m4j3-6qcf-hmmh","MINI-rgfv-947c-j7h2","PYSEC-2025-265","SUSE-SU-2026:0838-1","UBUNTU-CVE-2025-67724"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Python web framework","requires_auth":"none","summary":"Attackers can inject malicious scripts or headers via the reason argument in Tornado, leading to XSS or header injection.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"tornado","vendor":"tornadoweb"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"},{"id":"CWE-644","name":"Improper Neutralization of HTTP Headers for Scripting Syntax"}],"description":"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\" phrases (the \"Not Found\" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.","ecosystems":["PyPI","SUSE:Linux Enterprise Micro 5.2","SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Module for Basesystem 15 SP7"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Tornado vulnerable to Header Injection and XSS via reason argument","id":"CVE-2025-67724","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"xss","year":"2025"},"n_packages":8,"n_references":3,"next":{"headline":"Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing","id":"CVE-2025-67725"},"packages":[{"ecosystem":"PyPI","fixed":["6.5.3"],"introduced":["0"],"last_affected":[],"package":"tornado","purl":null,"source":"GHSA-pr2v-jx2c-wg9f"},{"ecosystem":"PyPI","fixed":["6.5.3"],"introduced":["0"],"last_affected":[],"package":"tornado","purl":"pkg:pypi/tornado","source":"GHSA-pr2v-jx2c-wg9f"},{"ecosystem":"PyPI","fixed":["6.5.3"],"introduced":["0"],"last_affected":[],"package":"tornado","purl":"pkg:pypi/tornado","source":"PYSEC-2025-265"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.2","fixed":["4.5.3-150000.3.16.1"],"introduced":["0"],"last_affected":[],"package":"python-tornado","purl":"pkg:rpm/suse/python-tornado\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.2","source":"SUSE-SU-2026:0838-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.3","fixed":["4.5.3-150000.3.16.1"],"introduced":["0"],"last_affected":[],"package":"python-tornado","purl":"pkg:rpm/suse/python-tornado\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.3","source":"SUSE-SU-2026:0838-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.4","fixed":["4.5.3-150000.3.16.1"],"introduced":["0"],"last_affected":[],"package":"python-tornado","purl":"pkg:rpm/suse/python-tornado\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.4","source":"SUSE-SU-2026:0838-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.5","fixed":["4.5.3-150000.3.16.1"],"introduced":["0"],"last_affected":[],"package":"python-tornado","purl":"pkg:rpm/suse/python-tornado\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.5","source":"SUSE-SU-2026:0838-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP7","fixed":["4.5.3-150000.3.16.1"],"introduced":["0"],"last_affected":[],"package":"python-tornado","purl":"pkg:rpm/suse/python-tornado\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7","source":"SUSE-SU-2026:0838-1"}],"prev":{"headline":"Discourse vulnerable to stored Cross-site Scripting via Katex in discourse-math plugin","id":"CVE-2025-67723"},"products":["tornado"],"published":"2025-12-12","related":[{"cvss_score":8.7,"headline":"Tornado has a DoS due to too many multipart parts","id":"CVE-2026-31958","kev_date_added":null,"published":"2026-03-11"},{"cvss_score":7.5,"headline":"Tornado is Vulnerable to Quadratic DoS via Repeated Header Coalescing","id":"CVE-2025-67725","kev_date_added":null,"published":"2025-12-12"},{"cvss_score":7.5,"headline":"Tornado is Vulnerable to Quadratic DoS via Crafted Multipart Parameters","id":"CVE-2025-67726","kev_date_added":null,"published":"2025-12-12"},{"cvss_score":7.5,"headline":"Tornado has HTTP cookie parsing DoS vulnerability","id":"CVE-2024-52804","kev_date_added":null,"published":"2024-11-22"},{"cvss_score":7.2,"headline":"Tornado has incomplete validation of cookie attributes","id":"CVE-2026-35536","kev_date_added":null,"published":"2026-04-03"},{"cvss_score":6.5,"headline":"Tornado XSRF cookie allows side-channel attack against TLS (BREACH attack)","id":"CVE-2014-9720","kev_date_added":null,"published":"2020-01-24"},{"cvss_score":6.1,"headline":"Open redirect in Tornado","id":"CVE-2023-28370","kev_date_added":null,"published":"2023-05-25"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-12-18","vendors":["tornadoweb"]},"summary":"Attackers can inject malicious scripts or headers via the reason argument in Tornado, leading to XSS or header injection.","url":"https://insights.sbomify.com/CVE-2025-67724/"}