{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-23934","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2023-01-19T21:12:31.360Z","datePublished":"2023-02-14T19:56:22.659Z","dateUpdated":"2025-03-10T21:11:36.910Z"},"containers":{"cna":{"title":"Wrkzeug's incorrect parsing of nameless cookies leads to __Host- cookies bypass","problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"ADJACENT_NETWORK","availabilityImpact":"NONE","baseScore":2.6,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"},{"name":"https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028","tags":["x_refsource_MISC"],"url":"https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028"},{"name":"https://github.com/pallets/werkzeug/releases/tag/2.2.3","tags":["x_refsource_MISC"],"url":"https://github.com/pallets/werkzeug/releases/tag/2.2.3"},{"url":"https://www.debian.org/security/2023/dsa-5470"},{"url":"https://security.netapp.com/advisory/ntap-20230818-0003/"}],"affected":[{"vendor":"pallets","product":"werkzeug","versions":[{"version":"< 2.2.3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2023-08-18T13:06:20.023Z"},"descriptions":[{"lang":"en","value":"Werkzeug is a comprehensive WSGI web application library. Browsers may allow \"nameless\" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3."}],"source":{"advisory":"GHSA-px8h-6qxv-m22q","discovery":"UNKNOWN"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T10:49:07.628Z"},"title":"CVE Program Container","references":[{"name":"https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q","tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"},{"name":"https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028"},{"name":"https://github.com/pallets/werkzeug/releases/tag/2.2.3","tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/pallets/werkzeug/releases/tag/2.2.3"},{"url":"https://www.debian.org/security/2023/dsa-5470","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20230818-0003/","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-03-10T20:57:36.294064Z","id":"CVE-2023-23934","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-03-10T21:11:36.910Z"}}]}}