CVE-2026-76969: @sap/cds-mtx Credential Disclosure Vulnerability

CRITICAL
Advisory Identifier: GHSA-955m-rr6m-2f9v
Share
CVSS 9.4
CWE-522
Published
Advisory Summary

CVE-2026-76969 is a CRITICAL (CVSS 9.4) credential disclosure vulnerability (CWE-522: Insufficiently Protected Credentials) affecting @sap/cds-mtx libraries in the npm ecosystem. The issue involves credential disclosure in multitenant applications using sap cloud application programming model (cap). Remediation is available by upgrading affected packages to version 4.0.3, 3.9.7, 2.7.7, 1.18.4.

CVE-2026-76969 at a Glance

CVE Identifier CVE-2026-76969
GHSA Identifier GHSA-955m-rr6m-2f9v
Severity CRITICAL
CVSS v3.1 Base Score 9.4
CWE Classification CWE-522: Insufficiently Protected Credentials
Affected Product @sap/cds-mtx
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.4

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:N/S:U/C:L/I:H/A:H).

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

How to Fix CVE-2026-76969

To remediate this vulnerability, upgrade all affected @sap/cds-mtx 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/cds-mtxs fixed: 4.0.3 
npm install @sap/cds-mtxs@4.0.3
@sap/cds-mtxs fixed: 3.9.7 
npm install @sap/cds-mtxs@3.9.7
@sap/cds-mtxs fixed: 2.7.7 
npm install @sap/cds-mtxs@2.7.7
@sap/cds-mtxs fixed: 1.18.4 
npm install @sap/cds-mtxs@1.18.4
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/cds-mtxs

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-76969, inspect your project dependencies using npm:

npm ls @sap/cds-mtxs

Analyze the terminal output to locate any version of @sap/cds-mtx in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.0.3), your application is affected.

Note: The npm ls @sap/cds-mtxs 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-522: Insufficiently Protected Credentials, where the product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval. In @sap/cds-mtx, 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/cds-mtxs NPM library does not perform sufficient checks on certain functionality used in multitenant CAP applications with extensibility enabled. An unauthenticated attacker could send specially crafted requests to obtain sensitive credentials and abuse them to replace or delete tenant data. Successful exploitation can result in a high impact on availability and integrity of the application. There may also be partial impact to the confidentiality of business data.

CVE-2026-76969 Affected @sap/cds-mtx Versions

4 component(s)
Fixed Versions:
4.0.33.9.72.7.71.18.4
Product / Package Ecosystem Affected Versions Fixed Version
@sap/cds-mtxs
npm/@sap/cds-mtxs
npm
≥ 4.0.1
< 4.0.3
4.0.3
@sap/cds-mtxs
npm/@sap/cds-mtxs
npm
≥ 3.0.1
< 3.9.7
3.9.7
@sap/cds-mtxs
npm/@sap/cds-mtxs
npm
≥ 2.0.2
< 2.7.7
2.7.7
@sap/cds-mtxs
npm/@sap/cds-mtxs
npm
< 1.18.4
1.18.4

References

NVD — CVE-2026-76969 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76969
me.sap.com/notes/3798315 WEB
https://me.sap.com/notes/3798315
@sap/cds-mtx Security Information SECURITY
https://url.sap/sapsecuritypatchday

Frequently Asked Questions

What is CVE-2026-76969?
CVE-2026-76969 is a security vulnerability in @sap/cds-mtx involving Credential disclosure in multitenant applications using SAP Cloud Application Programming Model (CAP) under CWE-522: Insufficiently Protected Credentials.
Which @sap/cds-mtx versions are affected?
Affected versions include releases prior to 4.0.3, 3.9.7, 2.7.7, 1.18.4 across affected packages: @sap/cds-mtxs.
What version fixes CVE-2026-76969?
Upgrading to 4.0.3, 3.9.7, 2.7.7, 1.18.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @sap/cds-mtxs affected?
Yes, @sap/cds-mtxs is affected in releases prior to 4.0.3, 3.9.7, 2.7.7, 1.18.4. Upgrade your dependency to 4.0.3, 3.9.7, 2.7.7, 1.18.4 or later.
What is the CVSS score of CVE-2026-76969?
CVE-2026-76969 has a CVSS v3.1 base score of 9.4 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.
What CWE is associated with CVE-2026-76969?
CVE-2026-76969 is classified under CWE-522: Insufficiently Protected Credentials (The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.).
How can I check npm dependencies for CVE-2026-76969?
Run the dependency tree command: 'npm ls @sap/cds-mtxs'. 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-955m-rr6m-2f9v",
  "modified" : "2026-09-17T19:05:38Z",
  "published" : "2026-09-08T03:31:13Z",
  "aliases" : [ "CVE-2026-76969" ],
  "summary" : "@sap/cds-mtx: Credential disclosure in multitenant applications using SAP Cloud Application Programming Model (CAP)",
  "details" : "@sap/cds-mtxs NPM library does not perform sufficient checks on certain functionality used in multitenant CAP applications with extensibility enabled. An unauthenticated attacker could send specially crafted requests to obtain sensitive credentials and abuse them to replace or delete tenant data. Successful exploitation can result in a high impact on availability and integrity of the application. There may also be partial impact to the confidentiality of business data.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@sap/cds-mtxs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.1"
      }, {
        "fixed" : "4.0.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@sap/cds-mtxs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.1"
      }, {
        "fixed" : "3.9.7"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@sap/cds-mtxs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.2"
      }, {
        "fixed" : "2.7.7"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@sap/cds-mtxs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.18.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-76969"
  }, {
    "type" : "WEB",
    "url" : "https://me.sap.com/notes/3798315"
  }, {
    "type" : "WEB",
    "url" : "https://url.sap/sapsecuritypatchday"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-522" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-17T19:05:38Z",
    "nvd_published_at" : "2026-09-08T01:17:55Z"
  }
}