{
  "cveId": "CVE-2026-80255",
  "url": "https://patchblox.com/security/cve/CVE-2026-80255",
  "summary": "CVE-2026-80255 is fixed in 10 products on 1 platform, first by curl 8.18.0-1ubuntu2.7, released September 6, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "secure cookie attribute bypass with tab",
  "description": "A \u0060Set-Cookie:\u0060 header using tab (horizontal tab, ASCII code 9) instead of space (ascii code 32) immediately before the \u0060Secure\u0060 attribute causes curl to store the cookie without its Secure flag. The cookie might then wrongfully be sent over plaintext HTTP on subsequent requests to the same host.",
  "published": "2026-09-06T11:17:00Z",
  "severity": "Low",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
  "epss": 0.00478,
  "epssPercentile": 0.41557,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80255",
  "fixes": [
    {
      "platform": "linux",
      "product": "curl",
      "release": "Debian 14",
      "fixedVersion": "8.22.0-1",
      "fix": "DEBIAN-CVE-2026-80255",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-80255",
      "released": "2026-09-19T18:30:58Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "Fedora 43",
      "fixedVersion": "8.15.0-12.fc43",
      "fix": "FEDORA-2026-D65DA12723",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d65da12723",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "8.18.0-1ubuntu2.7",
      "fix": "curl 8.18.0-1ubuntu2.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-curl-8.18.0-1ubuntu2.7",
      "released": "2026-09-06T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "sles 15.6",
      "fixedVersion": "8.22.0-150600.4.58.1",
      "fix": "SUSE-SU-2026:5069-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5069-1",
      "released": "2026-11-07T00:42:08Z"
    },
    {
      "platform": "linux",
      "product": "curl",
      "release": "sles 15.7",
      "fixedVersion": "8.22.0-150700.7.33.1",
      "fix": "SUSE-SU-2026:5068-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5068-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "curl-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "8.15.0-12.fc43",
      "fix": "FEDORA-2026-D65DA12723",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d65da12723",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "curl-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "8.15.0-12.fc43",
      "fix": "FEDORA-2026-D65DA12723",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d65da12723",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "libcurl",
      "release": "Fedora 43",
      "fixedVersion": "8.15.0-12.fc43",
      "fix": "FEDORA-2026-D65DA12723",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d65da12723",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "libcurl-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "8.15.0-12.fc43",
      "fix": "FEDORA-2026-D65DA12723",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d65da12723",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "libcurl-devel",
      "release": "Fedora 43",
      "fixedVersion": "8.15.0-12.fc43",
      "fix": "FEDORA-2026-D65DA12723",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d65da12723",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "libcurl-minimal",
      "release": "Fedora 43",
      "fixedVersion": "8.15.0-12.fc43",
      "fix": "FEDORA-2026-D65DA12723",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d65da12723",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "libcurl-minimal-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "8.15.0-12.fc43",
      "fix": "FEDORA-2026-D65DA12723",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-d65da12723",
      "released": "2026-11-07T01:05:44Z"
    },
    {
      "platform": "linux",
      "product": "libcurl3t64-gnutls",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "8.18.0-1ubuntu2.7",
      "fix": "libcurl3t64-gnutls 8.18.0-1ubuntu2.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libcurl3t64-gnutls-8.18.0-1ubuntu2.7",
      "released": "2026-09-06T11:17:00Z"
    },
    {
      "platform": "linux",
      "product": "libcurl4t64",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "8.18.0-1ubuntu2.7",
      "fix": "libcurl4t64 8.18.0-1ubuntu2.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libcurl4t64-8.18.0-1ubuntu2.7",
      "released": "2026-09-06T11:17:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}