CVE Explorer

CVE-2026-49284

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

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0c0c12d4d69f30a89cc43933d817ca111cc428dd55ed91d71f02e3f5b56d5837

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"simplesamlphp","vendor":"simplesamlphp","versions":[{"status":"affected","version":"< 2.4.7"},{"status":"affected","version":">= 2.5.0-rc1, < 2.5.2"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:6a0a597b68e141e60a11c3cdb527cd0680b09905288b5f8e4db8b8de90f7fd32 · sha256:05a6bde11c11b4d1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:6a0a597b68e141e60a11c3cdb527cd0680b09905288b5f8e4db8b8de90f7fd32 · sha256:05a6bde11c11b4d1… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-345","description":"CWE-345: Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:6a0a597b68e141e60a11c3cdb527cd0680b09905288b5f8e4db8b8de90f7fd32 · sha256:05a6bde11c11b4d1… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.4.7","tags":["x_refsource_MISC"],"url":"https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.4.7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6a0a597b68e141e60a11c3cdb527cd0680b09905288b5f8e4db8b8de90f7fd32 · sha256:05a6bde11c11b4d1… · /containers/cna/references/1

{"name":"https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.5.2","tags":["x_refsource_MISC"],"url":"https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.5.2"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6a0a597b68e141e60a11c3cdb527cd0680b09905288b5f8e4db8b8de90f7fd32 · sha256:05a6bde11c11b4d1… · /containers/cna/references/2

{"name":"https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-q8r6-xj3f-wrrm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-q8r6-xj3f-wrrm"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6a0a597b68e141e60a11c3cdb527cd0680b09905288b5f8e4db8b8de90f7fd32 · sha256:05a6bde11c11b4d1… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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