CVE catalog

CVE-2026-61666

ruby-websocket-driver affected and fixed versions

[CVE catalog]

websocket-driver is a WebSocket protocol handler with pluggable I/O. Prior to 0.8.2, WebSocket::Driver.server() passes a malformed Host header to URI.parse in lib/websocket/http/request.rb without catching URI::InvalidURIError, allowing a remote client to crash a TCP-backed WebSocket server when the application does not catch the error from parse(). This issue is fixed in version 0.8.2.

Severity
High · CVSS 8.9CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
Source
[NVD] · [CVE record]
EPSS
0.45% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [
    {
      "name": "ruby-websocket-driver",
      "status": "fixed",
      "release": "sid",
      "version": "0.8.2-1"
    },
    {
      "name": "ruby-websocket-driver",
      "status": "fixed",
      "release": "forky",
      "version": "0.8.2-1"
    },
    {
      "name": "ruby-websocket-driver",
      "status": "vulnerable",
      "release": "trixie",
      "version": "0.6.3-3"
    },
    {
      "name": "ruby-websocket-driver",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "0.6.3-3"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "ruby-websocket-driver",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "0.8.2-1"
    },
    {
      "bug": null,
      "name": "ruby-websocket-driver",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "0.8.2-1"
    },
    {
      "bug": null,
      "name": "ruby-websocket-driver",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": null,
      "name": "ruby-websocket-driver",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "websocket-driver",
      "ecosystem": "rubygems",
      "fixed_version": "0.8.2"
    }
  ]
}

Publisher notes

[trixie] ruby-websocket-driver: Minor issue [bookworm] ruby-websocket-driver: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [ruby-websocket-driver]Unknown

    Source package: [ruby-websocket-driver]

    Details (2)

    • 0.6.3-3+b5 · amd64 · bookworm

      Affected

      dsa · ruby-websocket-driver · debian · bookworm; dsa · ruby-websocket-driver · debian · 12

    • 0.6.3-3+b5 · arm64 · bookworm

      Affected

      dsa · ruby-websocket-driver · debian · bookworm; dsa · ruby-websocket-driver · debian · 12

[Debian 13 (Trixie)]

  • [ruby-websocket-driver]Unknown

    Source package: [ruby-websocket-driver]

    Details (2)

    • 0.6.3-3+b8 · amd64 · trixie

      Affected

      dsa · ruby-websocket-driver · debian · 13

    • 0.6.3-3+b9 · arm64 · trixie

      Affected

      dsa · ruby-websocket-driver · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]