SAP Approuter vulnerabilities

13 CVEs affecting SAP Approuter, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-66778, published 2026-08-11.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2026-27690, published 2026-07-14. Critical severity, CVSS 9.1. EPSS: 0.7% chance of exploitation in the next 30 days. 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…
CVE-2026-44745, published 2026-07-14. High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days. SAP Approuter does not properly validate incoming request headers during the OAuth2 login flow under certain configurations. This allows an unauthenticated remote attacker to craft a malicious link…
CVE-2026-66777, published 2026-08-11. Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days. SAP Approuter does not sufficiently validate certain incoming requests before forwarding them to backend destinations. Due to the complexity of the required conditions, an attacker with low…
CVE-2026-58238, published 2026-08-11. Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days. SAP Approuter does not sufficiently handle certain requests under specific conditions. An unauthenticated attacker could send specially crafted input that causes the component to crash and restart.…
CVE-2026-66761, published 2026-08-11. Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days. SAP Approuter does not enforce sufficient flow control in certain functionality. An attacker with low privileges could send high volumes of data without consuming responses, causing unbounded memory…
CVE-2026-66778, published 2026-08-11. Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days. 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…
CVE-2026-66774, published 2026-08-11. Low severity, CVSS 3.7. EPSS: 0.4% chance of exploitation in the next 30 days. SAP Approuter does not consistently handle certain error conditions. An attacker with low privileges could exploit this under a non-default configuration. Successful exploitation is highly complex,…
CVE-2026-58239, published 2026-08-11. Low severity, CVSS 3.7. EPSS: 0.3% chance of exploitation in the next 30 days. SAP Approuter does not sufficiently validate tenant context in inbound requests. An unauthenticated attacker could send specially crafted requests to spoof the tenant context under conditions not…
CVE-2026-58230, published 2026-08-11. High severity, CVSS 7.0. EPSS: 0.3% chance of exploitation in the next 30 days. SAP Approuter does not sufficiently validate certain token content under specific configurations. An unauthenticated attacker could send a specially crafted token to cause sensitive credential…
CVE-2026-58237, published 2026-08-11. Medium severity, CVSS 5.9. EPSS: 0.3% chance of exploitation in the next 30 days. WebSocket of SAP Approuter does not perform sufficient authorization checks in certain functionality. An attacker with low privileges could exploit this to access restricted functionality. Successful…

Latest

CVE-2026-66776, published 2026-08-11. Medium severity, CVSS 5.9. EPSS: 0.2% chance of exploitation in the next 30 days. SAP Approuter does not consistently enforce integrity verification on certain session-related request headers under specific conditions. An attacker with low privileges could send a specially crafted…
CVE-2026-66775, published 2026-08-11. Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days. SAP Approuter does not enforce cross-site request forgery protection on the authentication flow by default. An unauthenticated attacker could craft a malicious link and trick a victim into following…
CVE-2026-66760, published 2026-08-11. Medium severity, CVSS 6.4. EPSS: 0.2% chance of exploitation in the next 30 days. SAP Approuter does not correctly validate client certificates in certain callback flows. An attacker with low privileges, holding a certificate from the same trusted authority with matching subject…