{
  "cveId": "CVE-2026-77281",
  "url": "https://patchblox.com/security/cve/CVE-2026-77281",
  "summary": "CVE-2026-77281 is fixed in caddy on 1 platform, first by DEBIAN-CVE-2026-77281, released September 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "caddy: Caddy is an extensible server platform that uses TLS by default",
  "description": "Caddy is an extensible server platform that uses TLS by default. In version 2.11.3 and earlier, three configuration-dependent weaknesses affect the handler and placeholder layer. In modules/caddyhttp/rewrite/rewrite.go, Rewrite.Rewrite() can pass attacker-controlled replacement bytes through buildQueryString for a second placeholder expansion when a rewrite URI ends with a literal question mark, allowing injected environment or request-variable placeholders to disclose data and, when the file provider is registered, allowing injected file placeholders to disclose readable files. The  issue is fixed in version 2.11.4.",
  "published": "2026-09-17T21:17:37Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
  "epss": 0.00491,
  "epssPercentile": 0.42459,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "caddy",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.6.2-5\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2026-77281",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-77281",
      "released": "2026-09-20T18:42:59Z"
    },
    {
      "platform": "linux",
      "product": "caddy",
      "release": "Debian 14",
      "fixedVersion": "2.11.4-1",
      "fix": "DEBIAN-CVE-2026-77281",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-77281",
      "released": "2026-09-20T18:42:59Z"
    }
  ],
  "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"
  }
}