Sap Approuter vulnerabilities

CVE-2026-27690 [CRITICAL] CWE-444 CVE-2026-27690: Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could s 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.

CVE-2026-44745 [HIGH] CWE-601 CVE-2026-44745: SAP Approuter does not properly validate incoming request headers during the OAuth2 login flow under 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 which, when clicked by a victim, could lead to unauthorized access. Successful exploitation results in a high impact to the confidentiality and integrity w

CVE-2025-24876 [HIGH] CWE-601 Authentication bypass in @sap/approuter Authentication bypass in @sap/approuter The SAP Approuter Node.js package version v16.7.1 and before is vulnerable to Authentication bypass. When trading an authorization code, an attacker can steal the session of the victim by injecting malicious payload, causing High impact on confidentiality and integrity of the application.

CVE-2026-58230 [HIGH] CWE-601 CVE-2026-58230: SAP Approuter does not sufficiently validate certain token content under specific configurations. An 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 material to be sent to an attacker-controlled destination. The attack complexity is high due to non-default preconditions required in the target environment. Th

CVE-2026-66760 [MEDIUM] CWE-295 CVE-2026-66760: SAP Approuter does not correctly validate client certificates in certain callback flows. An attacker 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 values, could bypass the identity check. This complexity makes the attack difficult to execute. Successful exploitation could allow impersonation of a tr

CVE-2026-66777 [MEDIUM] CWE-22 CVE-2026-66777: SAP Approuter does not sufficiently validate certain incoming requests before forwarding them to bac 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 privileges could send specially crafted requests to bypass authorization checks and reach protected resources beyond their assigned scope. Successful exploitation

CVE-2026-66776 [MEDIUM] CWE-347 CVE-2026-66776: SAP Approuter does not consistently enforce integrity verification on certain session-related reques 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 request that bypasses the integrity check and loads another user's session context. Successful exploitation requires the attacker to have previously ob

CVE-2026-58237 [MEDIUM] CWE-862 CVE-2026-58237: WebSocket of SAP Approuter does not perform sufficient authorization checks in certain functionality 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 exploitation could allow the attacker to read sensitive information and perform limited modifications, resulting in a high impact on confidentiality an

CVE-2026-58238 [MEDIUM] CWE-770 CVE-2026-58238: SAP Approuter does not sufficiently handle certain requests under specific conditions. An unauthenti 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. Successful exploitation requires specific runtime conditions to be met, making the attack complex to execute. This results in a high impact on availabili

CVE-2026-66778 [MEDIUM] CWE-644 CVE-2026-66778: SAP Approuter does not sufficiently sanitize certain request headers before forwarding traffic to in 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 information. This results in a low impact on confidentiality. There is no impact on integrity and availability.

CVE-2026-66761 [MEDIUM] CWE-770 CVE-2026-66761: SAP Approuter does not enforce sufficient flow control in certain functionality. An attacker with lo 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 growth. This results in a low impact on availability. There is no impact on confidentiality and integrity.

CVE-2026-66775 [MEDIUM] CWE-352 CVE-2026-66775: SAP Approuter does not enforce cross-site request forgery protection on the authentication flow by d 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 it. Successful exploitation could allow the attacker to bind the victim's session to an attacker-controlled identity, resulting in a low impact on integ

CVE-2026-58239 [LOW] CWE-807 CVE-2026-58239: SAP Approuter does not sufficiently validate tenant context in inbound requests. An unauthenticated 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 fully within their control. Successful exploitation could allow limited access to another tenant's information, resulting in a low impact on confidentiality. T

CVE-2026-66774 [LOW] CWE-754 CVE-2026-66774: SAP Approuter does not consistently handle certain error conditions. An attacker with low privileges 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, as it depends on conditions outside the attacker's control. This could result in a low impact on availability. There is no impact on confidentiality and int