blueprintUE: Active Sessions Are Not Invalidated After Password Change or Reset

{
  "id": "60a221313774e7cefa9ca6e68984f4773af41f3fe707bcf187be5dfc77faeebb",
  "url": "https://osv.dev/vulnerability/CVE-2026-40587",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "blueprintUE: Active Sessions Are Not Invalidated After Password Change or Reset",
    "summary": "blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, when a user changes their password via the profile edit page, or when a password reset is completed via the reset link, neither operation invalidates existing authenticated sessions for that user. A server-side session store associates userID → session; the current password change/reset flow updates only the password column in the users table and does not destroy or mark invalid any active sessions. As a result, an attacker who has already compromised a session retains full access to the account indefinitely — even after the legitimate user has detected the intrusion and changed their password — until the session's natural expiry time (configured as SESSION_GC_MAXLIFETIME, defaulting to 86400 seconds / 24 hours, with SESSION_LIFETIME=0 meaning persistent until browser close or GC, whichever is later). This vulnerability is fixed in 4.2.0.",
    "evidence": "osv:CVE-2026-40587",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-40587",
      "aliases": [
        "CVE-2026-40587",
        "GHSA-gqpq-x62g-p4mg"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/blueprintue/blueprintue-self-hosted-edition",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "28689950b0fc1c6a0c5db2a034a03fdc9747467c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.2.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.2.0"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.1.2",
            "v4.1.1",
            "v4.1.0",
            "v4.0.0",
            "v3.2.0",
            "v3.1.0",
            "v3.0.0",
            "v2.1.0",
            "v2.0.1",
            "v2.0.0",
            "v1.0.6",
            "v1.0.5",
            "v1.0.4",
            "v1.0.3",
            "v1.0.2",
            "v1.0.1",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40587.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.539144845Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40587.json",
        "https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-gqpq-x62g-p4mg",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-40587"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-613"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40587.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-40587",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492181,
  "published_at": "2026-04-21T17:11:23.74+00:00"
}