Vulnerabilities in pkg:npm/@sap/approuter

PACKAGE
Advisory Identifier: GHSA-44p5-3m5g-vfhj
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Advisory Summary

CVE-2026-44745 is a HIGH (CVSS 8.1) sap approuter has an open vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting @sap/approuter libraries in the npm ecosystem. The issue involves sap approuter has an open redirect vulnerability. Remediation is available by upgrading affected packages to version 21.2.0.

4 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/@sap/approuter

4 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/@sap/approuter. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-44p5-3m5g-vfhj CVE-2026-44745 HIGH SAP Approuter has an Open Redirect vulnerability
GHSA-vhh6-v828-x62f CVE-2026-58230 HIGH SAP Approuter has an Information Disclosure vulnerability
GHSA-8m85-wqg7-c529 CVE-2026-27690 CRITICAL SAP Approuter Vulnerable to HTTP Request Smuggling
GHSA-cpfx-964w-4jvp CVE-2025-24876 HIGH Authentication bypass in @sap/approuter

CVE-2026-44745 at a Glance

CVE Identifier CVE-2026-44745
GHSA Identifier GHSA-44p5-3m5g-vfhj
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product @sap/approuter
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-44745

To remediate this vulnerability, upgrade all affected @sap/approuter dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

@sap/approuter fixed: 21.2.0 
npm install @sap/approuter@21.2.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls @sap/approuter

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-44745, inspect your project dependencies using npm:

npm ls @sap/approuter

Analyze the terminal output to locate any version of @sap/approuter in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 21.2.0), your application is affected.

Note: The npm ls @sap/approuter command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. In @sap/approuter, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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 with no impact on the availability of the application.

CVE-2026-44745 Affected @sap/approuter Versions

1 component(s)
Fixed Versions:
21.2.0
Product / Package Ecosystem Affected Versions Fixed Version
@sap/approuter
npm/@sap/approuter
npm
< 21.2.0
21.2.0

References

NVD — CVE-2026-44745 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44745
me.sap.com/notes/3741519 WEB
https://me.sap.com/notes/3741519
@sap/approuter Security Information SECURITY
https://url.sap/sapsecuritypatchday

Frequently Asked Questions

What is CVE-2026-44745?
CVE-2026-44745 is a security vulnerability in @sap/approuter involving SAP Approuter has an Open Redirect vulnerability under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which @sap/approuter versions are affected?
Affected versions include releases prior to 21.2.0 across affected packages: @sap/approuter.
What version fixes CVE-2026-44745?
Upgrading to 21.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @sap/approuter affected?
Yes, @sap/approuter is affected in releases prior to 21.2.0. Upgrade your dependency to 21.2.0 or later.
What is the CVSS score of CVE-2026-44745?
CVE-2026-44745 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-44745?
CVE-2026-44745 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check npm dependencies for CVE-2026-44745?
Run the dependency tree command: 'npm ls @sap/approuter'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-44p5-3m5g-vfhj",
  "modified" : "2026-09-01T21:20:47Z",
  "published" : "2026-07-14T03:31:35Z",
  "aliases" : [ "CVE-2026-44745" ],
  "summary" : "SAP Approuter has an Open Redirect vulnerability",
  "details" : "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 with no impact on the availability of the application.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@sap/approuter"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "21.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44745"
  }, {
    "type" : "WEB",
    "url" : "https://me.sap.com/notes/3741519"
  }, {
    "type" : "WEB",
    "url" : "https://url.sap/sapsecuritypatchday"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-01T21:20:47Z",
    "nvd_published_at" : "2026-07-14T01:16:17Z"
  }
}