{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-29T19:07:20.468","vulnerabilities":[{"cve":{"id":"CVE-2026-27199","sourceIdentifier":"security-advisories@github.com","published":"2026-02-21T06:17:00.710","lastModified":"2026-06-17T10:26:50.207","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Werkzeug is a comprehensive WSGI web application library. Versions 3.1.5 and below, the safe_join function allows Windows device names as filenames if preceded by other path segments. This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that safe_join accepts paths with multiple segments, such as example/NUL. The function send_from_directory uses safe_join to safely serve files at user-specified paths under a directory. If the application is running on Windows, and the requested path ends with a special device name, the file will be opened successfully, but reading will hang indefinitely. This issue has been fixed in version 3.1.6."},{"lang":"es","value":"Werkzeug es una completa biblioteca de aplicaciones web WSGI. Las versiones 3.1.5 e inferiores, la función safe_join permite nombres de dispositivos de Windows como nombres de archivo si van precedidos por otros segmentos de ruta. Esto fue reportado previamente como GHSA-hgf8-39gv-g3f2, pero el filtrado añadido no tuvo en cuenta el hecho de que safe_join acepta rutas con múltiples segmentos, como example/NUL. La función send_from_directory utiliza safe_join para servir archivos de forma segura en rutas especificadas por el usuario bajo un directorio. Si la aplicación se está ejecutando en Windows, y la ruta solicitada termina con un nombre de dispositivo especial, el archivo se abrirá con éxito, pero la lectura se colgará indefinidamente. Este problema ha sido solucionado en la versión 3.1.6."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"pallets","product":"werkzeug","versions":[{"version":"< 3.1.6","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.9,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-02-24T19:02:05.165135Z","id":"CVE-2026-27199","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-67"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*","versionEndExcluding":"3.1.6","matchCriteriaId":"97FC0575-11B9-4EDE-A4B1-1724FF940BA5"}]}]}],"references":[{"url":"https://github.com/pallets/werkzeug/commit/f407712fdc60a09c2b3f4fe7db557703e5d9338d","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/pallets/werkzeug/releases/tag/3.1.6","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/pallets/werkzeug/security/advisories/GHSA-29vq-49wr-vm6x","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}}]}