{"id":82165,"date":"2026-07-17T22:47:23","date_gmt":"2026-07-17T19:17:23","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-49284-simplesamlphp-sp-accepts-a-response-from-an-unexpected-idp-when-unsigned-response-inresponseto-is-combined-with-a-signed-assertion-lacking-subjectconfirmationdata-inresponseto\/"},"modified":"2026-07-17T22:47:23","modified_gmt":"2026-07-17T19:17:23","slug":"cve-2026-49284-simplesamlphp-sp-accepts-a-response-from-an-unexpected-idp-when-unsigned-response-inresponseto-is-combined-with-a-signed-assertion-lacking-subjectconfirmationdata-inresponseto","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-49284-simplesamlphp-sp-accepts-a-response-from-an-unexpected-idp-when-unsigned-response-inresponseto-is-combined-with-a-signed-assertion-lacking-subjectconfirmationdata-inresponseto\/","title":{"rendered":"CVE-2026-49284 &#8211; SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response\/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData\/InResponseTo`"},"content":{"rendered":"<p>CVE ID :CVE-2026-49284<\/p>\n<p>  Published : July 17, 2026, 7:17 p.m. | 21\u00a0minutes ago<\/p>\n<p>  Description :SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp&#8217;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.<\/p>\n<p>  Severity: 0.0 | NA<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-49284 Published : July 17, 2026, 7:17 p.m. | 21\u00a0minutes ago Description :SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp&#8217;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 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-82165","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=82165"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/82165\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=82165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=82165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=82165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}