CVE-2026-49284
HIGHSimplesamlphp 2.4.7 and 2.5.0-rc1, < 2.5.2 - Information Disclosure
Title source: ruleDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-q8r6-xj3f-wrrm
X_Refsource_Misc x_refsource_misc
https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.4.7
X_Refsource_Misc x_refsource_misc
https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.5.2
Scores
CVSS v3
7.1
EPSS
0.0015
EPSS Percentile
4.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-345
Status
published
Products (2)
simplesamlphp/simplesamlphp
< 2.4.7 (2 CPE variants)
simplesamlphp/simplesamlphp
>= 2.5.0-rc1, < 2.5.2
Published
Jul 17, 2026
Tracked Since
Jul 18, 2026