{"id":"CVE-2026-27690","aliases":["EUVD-2026-43584","GHSA-8m85-wqg7-c529"],"status":"published","title":"HTTP Request Smuggling in SAP Approuter","description":"Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00682,"percentile":0.52931,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-444"],"published":"2026-07-14T00:17:55Z","modified":"2026-10-24T22:10:00Z","fixes":[{"ecosystem":"npm","package":"@sap/approuter","fixed_in":["20.10.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@sap/approuter","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.10.0"}]}]},{"source":"osv","ecosystem":"npm","package":"@sap/approuter","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"20.10.0"}]}]}],"products":[{"vendor":"sap","product":"approuter"},{"vendor":"sap_se","product":"sap approuter"}],"references":[{"url":"https://me.sap.com/notes/3720138","tags":["Permissions Required","web"]},{"url":"https://url.sap/sapsecuritypatchday","tags":["Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27690","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8m85-wqg7-c529"}],"sources":{"cve":[{"id":"CVE-2026-27690","title":"HTTP Request Smuggling in SAP Approuter","description":"Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.","status":"published","published":"2026-07-14T00:17:55.003Z","modified":"2026-07-14T12:46:07.535Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:19:48.826324Z"}],"euvd":[{"id":"EUVD-2026-43584","description":"Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.","status":"published","published":"2026-07-14T00:17:55Z","modified":"2026-07-14T12:46:07Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"updated_at":"2026-11-02T18:20:00.206712Z"}],"ghsa":[{"id":"GHSA-8m85-wqg7-c529","title":"SAP Approuter Vulnerable to HTTP Request Smuggling","description":"Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.","status":"published","published":"2026-07-14T03:31:35Z","modified":"2026-09-01T21:21:22Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:41:10.121131Z"}],"nvd":[{"id":"CVE-2026-27690","description":"Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.","status":"published","published":"2026-07-14T01:16:17.193Z","modified":"2026-10-24T22:10:00.21Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-444"],"updated_at":"2026-11-02T14:12:29.114188Z"}],"osv":[{"id":"GHSA-8m85-wqg7-c529","title":"SAP Approuter Vulnerable to HTTP Request Smuggling","description":"Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. 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