{"id":"CVE-2026-66778","title":"SAP Approuter does not sufficiently sanitize certain request headers before forwarding traffic to internal components","summary":"SAP Approuter does not sufficiently sanitize certain request headers before forwarding traffic to internal components. An unauthenticated attacker could send a specially crafted request to obtain limited unauthorized access to informatio…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-644"],"vendor":"sap","product":"approuter","affected":["approuter < 23.0.0"],"patched":["approuter 23.0.0"],"published":"2026-08-11","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:21:52.340","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-66778","references":[{"url":"https://me.sap.com/notes/3786038","label":"cna@sap.com"},{"url":"https://url.sap/sapsecuritypatchday","label":"cna@sap.com"}],"tags":["nvd"],"epss":0.00234,"epssPercentile":0.14648,"ingestedAt":"2026-09-08T21:11:12.275Z","slug":"CVE-2026-66778","body":"## Overview\n\nSAP Approuter does not sufficiently sanitize certain request headers before forwarding traffic to internal components. An unauthenticated attacker could send a specially crafted request to obtain limited unauthorized access to information. This results in a low impact on confidentiality. There is no impact on integrity and availability.\n\n## Affected\n\n- `approuter < 23.0.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `approuter 23.0.0`","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}