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CVE-2026-49284

🗓️ 17 Jul 2026 19:17:23Reported by Debian Security Bug TrackerType 
debiancve
 debiancve🔗 security-tracker.debian.org👁 4 Views

Information disclosure in SimpleSAMLphp before 1.18.6 enables misbinding IdP in SP-initiated login; fixed in 2.4.7 and 2.5.2.

Related
Packages
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-49284
17 Jul 202619:17
–attackerkb
Circl		CVE-2026-49284
17 Jul 202619:50
–circl
CVE		CVE-2026-49284
17 Jul 202619:17
–cve
Cvelist		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`
17 Jul 202619:17
–cvelist
EUVD		EUVD-2026-45284
17 Jul 202619:17
–euvd
Github Security Blog		SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`
2 Jul 202620:47
–github
NVD		CVE-2026-49284
17 Jul 202620:17
–nvd
OSV		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`
17 Jul 202619:17
–osv
OSV		DEBIAN-CVE-2026-49284
17 Jul 202620:17
–osv
OSV		GHSA-Q8R6-XJ3F-WRRM SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`
2 Jul 202620:47
–osv
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Debian11allsimplesamlphp1.19.0-1+deb11u2simplesamlphp_1.19.0-1+deb11u2_all.deb
Debian12allsimplesamlphp1.19.7-1+deb12u2simplesamlphp_1.19.7-1+deb12u2_all.deb
Debian14allsimplesamlphp2.2.6-1simplesamlphp_2.2.6-1_all.deb
Debian999allsimplesamlphp2.4.8-1simplesamlphp_2.4.8-1_all.deb

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17 Jul 2026 19:17Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.17.1
EPSS0.00229
SSVC
SimpleSAMLphpinformation disclosureidentity providerservice providermisbindingsp initiated login
4