chore(deps): update dependency xml-crypto to v2.1.6 [security]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
xml-crypto	2.1.3 -> 2.1.6

GitHub Vulnerability Alerts

CVE-2025-29774

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 with a valid account 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.

Multiple SignedInfo Nodes

There should not be more than one SignedInfo node inside a Signature. If you find multiple SignedInfo nodes, it could indicate an attack.

<Signature>
    <SomeNode>
      <SignedInfo>
        <Reference URI="somefakereference">
          <DigestValue>forgeddigestvalue</DigestValue>
        </Reference>
      </SignedInfo>
    </SomeNode>
    <SignedInfo>
        <Reference URI="realsignedreference">
          <DigestValue>realdigestvalue</DigestValue>
        </Reference>
      </SignedInfo>
    </SignedInfo>
</Signature>

Code to test

Pass in the decrypted version of the document

decryptedDocument = ... // yours to implement

// This check is per-Signature node, not per-document
const signedInfoNodes = xpath.select(".//*[local-name(.)='SignedInfo']", signatureNode);

if (signedInfoNodes.length === 0) {
  // Not necessarily a compromise, but invalid. Should contain exactly one SignedInfo node
  // Yours to implement
}

if (signedInfoNodes.length > 1) {
  // Compromise detected, yours to implement
}

CVE-2025-29775

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:

<DigestValue>
    <!--TBlYWE0ZWM4ODI1NjliYzE3NmViN2E1OTlkOGDhhNmI=-->
    c7RuVDYo83z2su5uk0Nla8DXcXvKYKgf7tZklJxL/LZ=
</DigestValue>

Code to test

Pass in the decrypted version of the document

decryptedDocument = ... // yours to implement

const digestValues = xpath.select(
  "//*[local-name()='DigestValue'][count(node()) > 1]",
  decryptedDocument,
);

if (digestValues.length > 0) {
  // Compromise detected, yours to implement
}

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Release Notes

node-saml/xml-crypto (xml-crypto)

v2.1.6

Compare Source

Full Changelog: node-saml/xml-crypto@v2.1.5...v2.1.6

This addresses two critical CVE:

• CVE-2025-29774
• CVE-2025-29775

Please note that this version of xml-crypto is an older version of this library and you are encouraged to update to the latest release. This fix was provided because of the severity of the issue and doesn't include other enhancements, security or otherwise, that have been otherwise made to the latest releases.

v2.1.5

Compare Source

What's Changed

• 2.1.5: bump @​xmldom/xmldom to 0.7.9 by @​jncr in yaronn#263

New Contributors

• @​jncr made their first contribution in yaronn#263

Full Changelog: node-saml/xml-crypto@v2.1.4...v2.1.5

v2.1.4

Compare Source

🐛 Bug Fixes

• [bug] Correct behavior for XML canonicalization with namespaces and nested elements #​242

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