CVE-2025-29775: Xml crypto Xml-crypto Vulnerable To XML Signature Vulnerability

Q: What is CVE-2025-29775?

CVE-2025-29775 is a security vulnerability in Xml crypto involving xml-crypto Vulnerable to XML Signature Verification Bypass via DigestValue Comment under CWE-347: Improper Verification of Cryptographic Signature.

Q: Which Xml crypto versions are affected?

Affected versions include releases prior to 6.0.1, 3.2.1, 2.1.6 across affected packages: xml-crypto.

Q: What version fixes CVE-2025-29775?

Upgrading to 6.0.1, 3.2.1, 2.1.6 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is xml-crypto affected?

Yes, xml-crypto is affected in releases prior to 6.0.1, 3.2.1, 2.1.6. Upgrade your dependency to 6.0.1, 3.2.1, 2.1.6 or later.

Q: What CWE is associated with CVE-2025-29775?

CVE-2025-29775 is classified under CWE-347: Improper Verification of Cryptographic Signature (The product does not verify, or incorrectly verifies, the cryptographic signature for data.).

Q: How can I check npm dependencies for CVE-2025-29775?

Run the dependency tree command: 'npm ls xml-crypto'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

CRITICAL

Advisory Identifier: GHSA-x3m8-899r-f7c3

CWE-347

Published 2025-03-14

Advisory Summary

CVE-2025-29775 is a CRITICAL xml-crypto vulnerable to xml signature vulnerability (CWE-347: Improper Verification of Cryptographic Signature) affecting Xml crypto libraries in the npm ecosystem. The issue involves xml-crypto vulnerable to xml signature verification bypass via digestvalue comment. Remediation is available by upgrading affected packages to version 6.0.1, 3.2.1, 2.1.6.

CVE-2025-29775 at a Glance

CVE Identifier CVE-2025-29775

GHSA Identifier GHSA-x3m8-899r-f7c3

Severity CRITICAL

CVSS v3.1 Base Score N/A

CWE Classification CWE-347: Improper Verification of Cryptographic Signature

Affected Product Xml crypto

Package Ecosystem npm

Published Date 2025-03-14

Last Updated 2025-03-16

How to Fix CVE-2025-29775

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

xml-crypto fixed: 6.0.1

npm install xml-crypto@6.0.1

xml-crypto fixed: 3.2.1

npm install xml-crypto@3.2.1

xml-crypto fixed: 2.1.6

npm install xml-crypto@2.1.6

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 xml-crypto

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-29775, inspect your project dependencies using npm:

npm ls xml-crypto

Analyze the terminal output to locate any version of Xml crypto in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.0.1), your application is affected.

Note: The npm ls xml-crypto 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-347: Improper Verification of Cryptographic Signature, where the product does not verify, or incorrectly verifies, the cryptographic signature for data. In Xml crypto, 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

# Impact An attacker may be able to exploit this vulnerability to bypass authentication or authorization mechanisms in systems that rely on xml-crypto for verifying signed XML documents. The vulnerability allows an attacker to modify a valid signed XML message in a way that still passes signature verification checks. For example, it could be used to alter critical identity or access control attributes, enabling an attacker to escalate privileges or impersonate another user. # Patches All versions <= 6.0.0 are affected. Please upgrade to version 6.0.1. If you are still using v2.x or v3.x please upgrade to the associated patch version. # Indicators of Compromise When logging XML payloads, check for the following indicators. If the payload includes encrypted elements, ensure you analyze the decrypted version for a complete assessment. (If encryption is not used, analyze the original XML document directly). This applies to various XML-based authentication and authorization flows, such as SAML Response payloads. ### Presence of Comments in `DigestValue` A `DigestValue` should **not** contain comments. If you find comments within it, this may indicate tampering. **Example of a compromised `DigestValue`:** ```xml <DigestValue>  c7RuVDYo83z2su5uk0Nla8DXcXvKYKgf7tZklJxL/LZ= </DigestValue> ``` ### Code to test Pass in the decrypted version of the document ```js decryptedDocument = ... // yours to implement const digestValues = xpath.select( "//*[local-name()='DigestValue'][count(node()) > 1]", decryptedDocument, ); if (digestValues.length > 0) { // Compromise detected, yours to implement } ```

CVE-2025-29775 Affected Xml crypto Versions

3 component(s)

Fixed Versions:

6.0.13.2.12.1.6

Product / Package	Ecosystem	Affected Versions	Fixed Version
xml-crypto npm/xml-crypto	npm	≥ 4.0.0 < 6.0.1	6.0.1
xml-crypto npm/xml-crypto	npm	≥ 3.0.0 < 3.2.1	3.2.1
xml-crypto npm/xml-crypto	npm	< 2.1.6	2.1.6

References

GitHub Advisory / Wiki ADVISORY

https://github.com/node-saml/xml-crypto/security/advisories/GHSA-x3m8-899r-f7c3

NVD — CVE-2025-29775 NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-29775

Security Fix Commit FIX COMMIT

https://github.com/node-saml/xml-crypto/commit/28f92218ecbb8dcbd238afa4efbbd50302aa9aed

Security Fix Commit FIX COMMIT

https://github.com/node-saml/xml-crypto/commit/886dc63a8b4bb5ae1db9f41c7854b171eb83aa98

Security Fix Commit FIX COMMIT

https://github.com/node-saml/xml-crypto/commit/8ac6118ee7978b46aa56b82cbcaa5fca58c93a07

Xml crypto Source Repository REPOSITORY

https://github.com/node-saml/xml-crypto

Xml crypto Release RELEASE

https://github.com/node-saml/xml-crypto/releases/tag/v2.1.6

Xml crypto Release RELEASE

https://github.com/node-saml/xml-crypto/releases/tag/v3.2.1

Xml crypto Release RELEASE

https://github.com/node-saml/xml-crypto/releases/tag/v6.0.1

workos.com/blog/samlstorm WEB

https://workos.com/blog/samlstorm

Frequently Asked Questions

What is CVE-2025-29775?

CVE-2025-29775 is a security vulnerability in Xml crypto involving xml-crypto Vulnerable to XML Signature Verification Bypass via DigestValue Comment under CWE-347: Improper Verification of Cryptographic Signature.

Which Xml crypto versions are affected?

Affected versions include releases prior to 6.0.1, 3.2.1, 2.1.6 across affected packages: xml-crypto.

What version fixes CVE-2025-29775?

Upgrading to 6.0.1, 3.2.1, 2.1.6 (or the latest patched release for your respective branch) resolves the vulnerability.

Is xml-crypto affected?

Yes, xml-crypto is affected in releases prior to 6.0.1, 3.2.1, 2.1.6. Upgrade your dependency to 6.0.1, 3.2.1, 2.1.6 or later.

What CWE is associated with CVE-2025-29775?

CVE-2025-29775 is classified under CWE-347: Improper Verification of Cryptographic Signature (The product does not verify, or incorrectly verifies, the cryptographic signature for data.).

How can I check npm dependencies for CVE-2025-29775?

Run the dependency tree command: 'npm ls xml-crypto'. 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-x3m8-899r-f7c3",
  "modified" : "2025-03-16T21:34:52Z",
  "published" : "2025-03-14T17:16:47Z",
  "aliases" : [ "CVE-2025-29775" ],
  "summary" : "xml-crypto Vulnerable to XML Signature Verification Bypass via DigestValue Comment",
  "details" : "# Impact\nAn attacker may be able to exploit this vulnerability to bypass authentication or authorization mechanisms in systems that rely on xml-crypto for verifying signed XML documents. The vulnerability allows an attacker to modify a valid signed XML message in a way that still passes signature verification checks. For example, it could be used to alter critical identity or access control attributes, enabling an attacker to escalate privileges or impersonate another user.\n\n# Patches\nAll versions <= 6.0.0 are affected. Please upgrade to version 6.0.1.\n\nIf you are still using v2.x or v3.x please upgrade to the associated patch version.\n\n# Indicators of Compromise\n\nWhen logging XML payloads, check for the following indicators. If the payload includes encrypted elements, ensure you analyze the decrypted version for a complete assessment. (If encryption is not used, analyze the original XML document directly). This applies to various XML-based authentication and authorization flows, such as SAML Response payloads.\n\n### Presence of Comments in `DigestValue`\nA `DigestValue` should **not** contain comments. If you find comments within it, this may indicate tampering.\n\n**Example of a compromised `DigestValue`:**\n```xml\n<DigestValue>\n    <!--TBlYWE0ZWM4ODI1NjliYzE3NmViN2E1OTlkOGDhhNmI=-->\n    c7RuVDYo83z2su5uk0Nla8DXcXvKYKgf7tZklJxL/LZ=\n</DigestValue>\n```\n\n### Code to test\n\nPass in the decrypted version of the document\n```js\ndecryptedDocument = ... // yours to implement\n\nconst digestValues = xpath.select(\n  \"//*[local-name()='DigestValue'][count(node()) > 1]\",\n  decryptedDocument,\n);\n\nif (digestValues.length > 0) {\n  // Compromise detected, yours to implement\n}\n```",
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}

CVSS V4

N/A CRITICAL

Attack Vector N/A

Attack Complexity N/A

Privileges Required N/A

User Interaction N/A

Scope N/A

Confidentiality N/A

Integrity N/A

Availability N/A

Vector String

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Advisory Metadata

Source ID: GHSA-x3m8-899r-f7c3
Schema Version: 1.4.0
Published: 2025-03-14 17:16
Last Modified: 2025-03-16 21:34
Database Record File: advisories/github-reviewed/2025/03/GHSA-x3m8-899r-f7c3/GHSA-x3m8-899r-f7c3.json