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CVE-2026-46490

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

samlify is a Node.js library for SAML single sign-on. Prior to version 2.13.0, 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 privilege escalation when attributes are used for authorization (roles/groups). This issue has been patched in version 2.13.0.

CVSS 8.7 · High · EPSS 0.5% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • samlify

    Versions
    • < 2.13.0: Affected

    No fix published

  • samlify npm

    Affected ranges
    • SEMVER: < 2.13.0

    Update to 2.13.0

Original sources

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