{
  "cveId": "CVE-2026-106454",
  "url": "https://patchblox.com/security/cve/CVE-2026-106454",
  "summary": "CVE-2026-106454 is fixed in 2 products on 1 platform, first by python3-twisted 22.1.0-2ubuntu2.8, released October 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Twisted: IMAP wildcardToRegexp() ReDoS",
  "description": "Twisted is an event-based framework for internet applications, supporting Python 3.6\u002B. In 25.5.0 and earlier, wildcardToRegexp() in twisted/mail/imap4.py translates the IMAP asterisk and percent wildcards but passes all other characters from an authenticated client\u0027s LIST or LSUB pattern directly to re.compile(), allowing nested or otherwise expensive regular expression constructs to cause catastrophic backtracking when matched against mailbox names. Because Twisted uses a cooperative single-threaded reactor, the blocking match suspends all server input and output for the duration of the match. No fixed release is available as of this review.",
  "published": "2026-10-06T13:17:00Z",
  "severity": "Moderate",
  "cvss": 4.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
  "cwe": "Inefficient Regular Expression Complexity",
  "epss": 0.00417,
  "epssPercentile": 0.36243,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-106454",
  "fixes": [
    {
      "platform": "linux",
      "product": "python3-twisted",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "22.1.0-2ubuntu2.8",
      "fix": "python3-twisted 22.1.0-2ubuntu2.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-twisted-22.1.0-2ubuntu2.8",
      "released": "2026-10-06T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-twisted",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "24.3.0-1ubuntu0.3",
      "fix": "python3-twisted 24.3.0-1ubuntu0.3",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-twisted-24.3.0-1ubuntu0.3",
      "released": "2026-10-06T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-twisted",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "25.5.0-5ubuntu0.2",
      "fix": "python3-twisted 25.5.0-5ubuntu0.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-python3-twisted-25.5.0-5ubuntu0.2",
      "released": "2026-10-06T13:17:00Z"
    },
    {
      "platform": "linux",
      "product": "twisted",
      "release": "Debian 14",
      "fixedVersion": "26.4.0-5",
      "fix": "DEBIAN-CVE-2026-106454",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-106454",
      "released": "2026-10-20T16:41:29Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T19:38:12Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}