{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.20.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "e9be7ce7ca5c9082f92c64b09f467052a574473a"
            }
          ],
          "repo": "https://github.com/katalyst/koi",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4cx3-3c38-j9vv"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-613"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44511.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "\u003e= 5.0.0 \u003c= 5.6.0"
          },
          {
            "last_affected": "\u003e= 5.0.0 \u003c= 5.6.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Katalyst Koi is a framework for building Rails admin functionality. Prior to 4.20.0 and 5.6.0, admin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This vulnerability is fixed in 4.20.0 and 5.6.0.",
  "id": "CVE-2026-44511",
  "modified": "2026-07-15T01:49:04.751010584Z",
  "published": "2026-05-14T16:17:29.187Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44511.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/katalyst/koi/security/advisories/GHSA-4cx3-3c38-j9vv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44511"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Katalyst Koi: Session cookies can be replayed after user logout"
}