samlify: XML Injection in AttributeValue Allows Privilege Escalation in Signed SAML Assertions — CVE-2026-46490

Summary

## Summary samlify’s template substitution only escapes attribute contexts. Values inserted into element text (e.g., `<saml:AttributeValue>`) are not escaped. A normal user can inject XML markup into an attribute value (e.g., email, name) and add new `<saml:Attribute>` elements inside the signed assertion. The IdP then signs the tampered assertion and the SP accepts the injected attributes as trusted. This allows…

Product

npm: samlify

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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