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CVE-2026-46490

HighCVSS 8.7 / 10
Published Jun 8, 2026·Last modified Jul 8, 2026
Affected Components(0)

No affected components available

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.

Risk Scores
Base Score
8.7

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
7.7

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
0.47%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Proof of Concept

A proof of concept is available for this vulnerability (1 exploit found).

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