CVEvulnerability
CVE-2026-49284
7.1 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-17
- Last modified
- 2026-07-30
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
- Weaknesses
- CWE-345
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 configurations
• simplesamlphp simplesamlphp (< 2.4.7)
• simplesamlphp simplesamlphp (>= 2.5.0 < 2.5.2)
Related
Weakness · CWE (1)
- CWE-345 Insufficient Verification of Data Authenticity weakness
References
- https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.4.7 Product, Release Notes
- https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.5.2 Product, Release Notes
- https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-q8r6-xj3f-wrrm Vendor Advisory