{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "3.0.0"
              },
              {
                "fixed": "3.2.2"
              }
            ]
          }
        ]
      }
    }
  ],
  "details": "Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw involving the session recovery feature. The flaw is exploitable (for a daemon crash) on systems not using this feature if a crafted cookie is supplied.",
  "id": "CVE-2021-31826",
  "modified": "2026-03-15T21:48:38.836250407Z",
  "published": "2021-04-27T04:15:08.550Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.shibboleth.net/view/?p=cpp-sp.git%3Ba=commit%3Bh=5a47c3b9378f4c49392dd4d15189b70956f9f2ec"
    },
    {
      "type": "ADVISORY",
      "url": "https://shibboleth.net/community/advisories/secadv_20210426.txt"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.debian.org/security/2021/dsa-4905"
    },
    {
      "type": "ADVISORY",
      "url": "https://bugs.debian.org/987608"
    },
    {
      "type": "FIX",
      "url": "https://issues.shibboleth.net/jira/browse/SSPCPP-927"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}