{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Casdoor",
          "vendor": "Casdoor",
          "versions": [
            {
              "lessThanOrEqual": "2.362.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In Casdoor versions 2.362.0 and earlier, the SAML callback handler in controllers/auth.go accepts any well-formed SAMLResponse sent to /api/acs without verifying that it corresponds to an AuthnRequest previously issued by Casdoor. Additionally, if an administrator disables or deletes an IdP (Identity Provider) after a SAML flow has started, the handler still processes the response using the provider snapshot loaded at the start of the request. As a result, an attacker controlling a registered upstream IdP can send unsolicited SAML responses, or replay a legitimately captured response in a different session or after the original flow has ended. In both cases, Casdoor accepts the response and issues a session, enabling persistent unauthorized access."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-346 Origin Validation Error",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-28T16:31:42.767Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://kb.cert.org/vuls/id/780781"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CVE-2026-9098",
      "x_generator": {
        "engine": "VINCE 3.0.41",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-9098"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-9098",
    "datePublished": "2026-05-28T16:31:42.767Z",
    "dateReserved": "2026-05-20T15:05:20.584Z",
    "dateUpdated": "2026-05-28T16:31:42.767Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-9098",
      "date": "2026-05-29",
      "epss": "0.0001",
      "percentile": "0.01206"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-9098\",\"sourceIdentifier\":\"cret@cert.org\",\"published\":\"2026-05-28T17:16:34.963\",\"lastModified\":\"2026-05-28T18:00:22.543\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In Casdoor versions 2.362.0 and earlier, the SAML callback handler in controllers/auth.go accepts any well-formed SAMLResponse sent to /api/acs without verifying that it corresponds to an AuthnRequest previously issued by Casdoor. Additionally, if an administrator disables or deletes an IdP (Identity Provider) after a SAML flow has started, the handler still processes the response using the provider snapshot loaded at the start of the request. As a result, an attacker controlling a registered upstream IdP can send unsolicited SAML responses, or replay a legitimately captured response in a different session or after the original flow has ended. In both cases, Casdoor accepts the response and issues a session, enabling persistent unauthorized access.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://kb.cert.org/vuls/id/780781\",\"source\":\"cret@cert.org\"}]}}"
  }
}