{
  "cveId": "CVE-2026-55961",
  "url": "https://patchblox.com/security/cve/CVE-2026-55961",
  "summary": "CVE-2026-55961 is fixed in wolfssl on 1 platform, first by DEBIAN-CVE-2026-55961, released July 18, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "wolfssl: wolfSSL_PKCS7_verify() returning success for a degenerate (certs-only) PKCS#7 object that contains no signer",
  "description": "wolfSSL_PKCS7_verify() returning success for a degenerate (certs-only) PKCS#7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when no signer signature has actually been verified, so a PKCS#7 carrying no valid signature is no longer reported as verified. This is enforced regardless of the PKCS7_NOVERIFY flag, which only suppresses signer certificate chain validation and was never intended to waive the requirement that a signature exist. Only affects OpenSSL compatibility builds that call the PKCS7_verify() compatibility API on potentially degenerate PKCS#7 bundles.",
  "published": "2026-06-25T18:16:41Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
  "epss": 0.00146,
  "epssPercentile": 0.03854,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "wolfssl",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.5.4-2\u002Bdeb12u3",
      "fix": "DEBIAN-CVE-2026-55961",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-55961",
      "released": "2026-07-18T12:42:52Z"
    },
    {
      "platform": "linux",
      "product": "wolfssl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.7.2-0.1\u002Bdeb13u2",
      "fix": "DEBIAN-CVE-2026-55961",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-55961",
      "released": "2026-07-18T12:42:52Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T13:56:55Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}