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CVE-2026-42786 WebSocket fragmented message reassembly unbounded in bandit

🗓️ 01 May 2026 20:34:17Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 57 Views

Unbounded WebSocket fragment reassembly in Bandit allows unauthenticated remote denial of service by memory exhaustion.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-42786
1 May 202620:34
–attackerkb
circl
Circl
CVE-2026-42786
3 May 202620:28
–circl
cnnvd
CNNVD
Bandit 安全漏洞
1 May 202600:00
–cnnvd
cve
CVE
CVE-2026-42786
1 May 202620:34
–cve
euvd
EUVD
EUVD-2026-26715
7 May 202603:43
–euvd
github
Github Security Blog
Bandit Buffers Unbounded WebSocket Continuation Frames, Allowing Unauthenticated Memory Exhaustion
7 May 202603:43
–github
mend
Mend
CVE-2026-42786
1 May 202620:34
–mend
nvd
NVD
CVE-2026-42786
1 May 202621:16
–nvd
osv_cve
osv_cve
CVE-2026-42786 WebSocket fragmented message reassembly unbounded in bandit
1 May 202620:34
–osv_cve
osv_eef
osv_eef
EEF-CVE-2026-42786 WebSocket fragmented message reassembly unbounded in bandit
1 May 202620:34
–osv_eef
Rows per page
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:mtrudel:bandit:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Bandit.WebSocket.Connection'"
    ],
    "packageName": "bandit",
    "packageURL": "pkg:hex/bandit",
    "product": "bandit",
    "programFiles": [
      "lib/bandit/websocket/connection.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Bandit.WebSocket.Connection':handle_frame/3"
      }
    ],
    "repo": "https://github.com/mtrudel/bandit",
    "vendor": "mtrudel",
    "versions": [
      {
        "lessThan": "1.11.0",
        "status": "affected",
        "version": "0.5.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:mtrudel:bandit:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Bandit.WebSocket.Connection'"
    ],
    "packageName": "mtrudel/bandit",
    "packageURL": "pkg:github/mtrudel/bandit",
    "product": "bandit",
    "programFiles": [
      "lib/bandit/websocket/connection.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Bandit.WebSocket.Connection':handle_frame/3"
      }
    ],
    "repo": "https://github.com/mtrudel/bandit",
    "vendor": "mtrudel",
    "versions": [
      {
        "lessThan": "21612c7c7b1ce43eccd36d3af3a2299d23513667",
        "status": "affected",
        "version": "8909391f486d42138c5308410bc5ea49a65f4d46",
        "versionType": "git"
      }
    ]
  }
]

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