Flaw in Neuvector can result in one user receiving another user's authenticated session when multiple SSO login attempts occur concurrently

{
  "id": "4e9c2a54e877cf6c87a757c11d3368c13020084d0beecd72b2d2d5369cff1b1f",
  "url": "https://osv.dev/vulnerability/CVE-2026-78428",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Flaw in Neuvector can result in one user receiving another user's authenticated session when multiple SSO login attempts occur concurrently",
    "summary": "For users authenticated through SAML or OpenID Connect (OIDC), this vulnerability can result in one user receiving another user's authenticated session when multiple SSO login attempts occur concurrently",
    "evidence": "osv:CVE-2026-78428",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-78428",
      "aliases": [
        "CVE-2026-78428",
        "GHSA-c6rx-pmvf-m3jx"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/neuvector/neuvector",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c13b2f609e6c04276994439d60072caeb0dcf3d9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
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                      {
                        "fixed": "5.6.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  }
                ]
              }
            }
          ],
          "versions": [
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            "v5.6.0-rc1",
            "controller/k8sapi/v1.0.0",
            "v5.4.9",
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            "v5.2.2-b2",
            "v5.2.2-b1",
            "v8040.1",
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-78428.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.853191330Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78428.json",
        "https://github.com/neuvector/neuvector/security/advisories/GHSA-c6rx-pmvf-m3jx",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-78428",
        "https://bugzilla.suse.com/show_bug.cgi?id=1279937"
      ],
      "provider_metadata": {
        "cna_assigner": "suse",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78428.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-78428",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494347,
  "published_at": "2026-09-17T09:19:21.262+00:00"
}