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CVE-2026-0866

Status: RejectedUnscored—PoC
Severity—Unscored
Exploitation probability—next 30 days
Active exploitationNonot in the CISA catalog
Public exploitAvailableProof of concept on GitHub (unverified)

Rejected reason: After the publication of the PoC by the researcher and further analysis, we have determined that this issue does not constitute a valid vulnerability. The technique described is an obfuscation method and does not bypass or impact any implicit or explicit security controls.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

FIRST hasn't scored this CVE yet (usual for very recent or rejected CVEs).

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Raw JSON (NVD)

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{
  "id": "CVE-2026-0866",
  "cveTags": [],
  "metrics": {},
  "published": "2026-03-18T20:16:19.150",
  "references": [],
  "vulnStatus": "Rejected",
  "descriptions": [
    {
      "lang": "en",
      "value": "Rejected reason: After the publication of the PoC by the researcher and further analysis, we have determined that this issue does not constitute a valid vulnerability. The technique described is an obfuscation method and does not bypass or impact any implicit or explicit security controls."
    }
  ],
  "lastModified": "2026-03-18T20:16:19.150",
  "sourceIdentifier": "cret@cert.org"
}