{
  "cveId": "CVE-2026-23831",
  "url": "https://patchblox.com/security/cve/CVE-2026-23831",
  "summary": "CVE-2026-23831 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-23831, released January 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "rekor: Rekor is a software supply chain transparency log",
  "description": "Rekor is a software supply chain transparency log. In versions 1.4.3 and below, the entry implementation can panic on attacker-controlled input when canonicalizing a proposed entry with an empty spec.message, causing nil Pointer Dereference. Function validate() returns nil (success) when message is empty, leaving sign1Msg uninitialized, and Canonicalize() later dereferences v.sign1Msg.Payload. A malformed proposed entry of the cose/v0.0.1 type can cause a panic on a thread within the Rekor process. The thread is recovered so the client receives a 500 error message and service still continues, so the availability impact of this is minimal. This issue has been fixed in version 1.5.0.",
  "published": "2026-01-22T22:16:19Z",
  "severity": "medium",
  "cvss": 5.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
  "epss": 0.00426,
  "epssPercentile": 0.37117,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "opensuse-leap 15.6",
      "fixedVersion": "0.0.20260205T172317-150000.1.146.1",
      "fix": "SUSE-SU-2026:0403-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-0403-1",
      "released": "2026-02-06T16:58:29Z"
    },
    {
      "platform": "linux",
      "product": "govulncheck-vulndb",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.0.20260723T184607-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21483-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21483-1",
      "released": "2026-07-30T09:09:47Z"
    },
    {
      "platform": "linux",
      "product": "rekor",
      "release": "Debian 14",
      "fixedVersion": "1.5.0-1",
      "fix": "DEBIAN-CVE-2026-23831",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-23831",
      "released": "2026-01-22T22:16:19Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}