Back to overview

CVE-2026-46490

HIGH Exploitation: PoC
8.7
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-46490
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-14 18:06 UTC
Published
2026-06-08 18:41 UTC
Last updated
2026-06-09 15:13 UTC
Primary CWE
CWE-91
CWE-91: XML Injection (aka Blind XPath Injection)
Vendor / Product
tngan / samlify
Sources
cve.org  ·  NVD

Severity & Metrics

8.7 HIGH CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
tngan samlify — < 2.13.0
Weakness (CWE)
CWESourceDescription
CWE-91 cna CWE-91: XML Injection (aka Blind XPath Injection)
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.7 HIGH 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
References (1)
Back to overview