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CVE-2026-49284

nvd nist
Published: Jul 17, 2026Modified: Jul 30, 2026

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7.1
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Exploitability: 2.8 / Impact: 4.2
Source: security-advisories@github.com (Secondary)

Description

SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking SubjectConfirmationData/InResponseTo, allowing a response issued by one trusted IdP to be bound to SP state created for another IdP and bypass flows that route users to a specific IdP, including deployments that set enable_unsolicited to false. This issue is fixed in versions 2.4.7 and 2.5.2.

Affected (2)

Simplesamlphp
1 product
Simplesamlphp
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Simplesamlphp
Simplesamlphp
Before 2.4.7
Simplesamlphp
From 2.5.0 to 2.5.2

Related CWEs

CWE-345
Insufficient Verification of Data Authenticity
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

References (3)

Source: security-advisories@github.com
ProductRelease Notes
Source: security-advisories@github.com
ProductRelease Notes
Source: security-advisories@github.com
Vendor Advisory

Timeline

No history available yet.