{
  "cveId": "CVE-2026-53524",
  "url": "https://patchblox.com/security/cve/CVE-2026-53524",
  "summary": "CVE-2026-53524 is fixed in weechat on 1 platform, first by DEBIAN-CVE-2026-53524, released August 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "weechat: WeeChat (Wee Enhanced Environment for Chat) is a free chat client",
  "description": "WeeChat (Wee Enhanced Environment for Chat) is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module\u0027s WebSocket permessage-deflate decompression function relay_websocket_inflate() has no upper bound on output size. An authenticated relay user can send a small compressed WebSocket frame (~100 bytes) that decompresses to gigabytes, exhausting all server memory and crashing the entire WeeChat process. The api protocol enables permessage-deflate and requires authentication before WebSocket upgrade. Version 4.9.1 patches the issue.",
  "published": "2026-08-20T16:20:15Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00484,
  "epssPercentile": 0.41952,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "weechat",
      "release": "Debian 14",
      "fixedVersion": "4.9.3-1",
      "fix": "DEBIAN-CVE-2026-53524",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53524",
      "released": "2026-08-18T23:07:56Z"
    },
    {
      "platform": "linux",
      "product": "weechat",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "4.10.0-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21615-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21615-1",
      "released": "2026-08-20T16:20:15Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}