CVE-2026-49284
- Source
- https://cve.org/CVERecord?id=CVE-2026-49284
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49284.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-49284
- Aliases
- Downstream
- Published
- 2026-07-17T19:17:23Z
- Modified
- 2026-10-28T02:31:08Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N CVSS Calculator
- Summary
- SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-345" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49284.json" }- References
-
- https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.4.7
- https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.5.2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49284.json
- https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-q8r6-xj3f-wrrm
- https://nvd.nist.gov/vuln/detail/CVE-2026-49284
Affected packages
Git / github.com/simplesamlphp/simplesamlphp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/simplesamlphp/simplesamlphp
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:*", "range": [ { "introduced": "0" }, { "fixed": "2.4.7" } ], "source": "CPE_RANGE" }, { "cpe": "cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:*", "range": [ { "introduced": "2.5.0" }, { "fixed": "2.5.2" } ], "source": "CPE_RANGE" }, { "original_tag": "v2.4.7", "range": [ { "fixed": "8b871fab276d4b0b2a09a727ceaa10ca3abd5d30" } ], "source": "REFERENCES_TAG" }, { "original_tag": "v2.5.2", "range": [ { "fixed": "e04c29a772769bb0bacba0ba072b599779d158c4" } ], "source": "REFERENCES_TAG" } ] }