Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samlify Project | Samlify | < 2.13.0 |
Related Weaknesses (CWE)
References
- https://github.com/tngan/samlify/security/advisories/GHSA-34r5-q4jw-r36mExploitVendor Advisory
- https://github.com/tngan/samlify/security/advisories/GHSA-34r5-q4jw-r36mExploitVendor Advisory
FAQ
What is CVE-2026-46490?
CVE-2026-46490 is a vulnerability with a CVSS score of 8.8 (HIGH). 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:Attribute...
How severe is CVE-2026-46490?
CVE-2026-46490 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46490?
Check the references section above for vendor advisories and patch information. Affected products include: Samlify Project Samlify.