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CVE-2026-39803 HTTP/1 chunked body reader ignores length cap in bandit

🗓️ 13 May 2026 13:36:09Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 39 Views

Bandit HTTP1 chunked reader ignores length cap, causing unauthenticated memory DoS.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-39803
13 May 202613:36
attackerkb
Circl
CVE-2026-39803
13 May 202613:31
circl
CNNVD
Bandit 安全漏洞
13 May 202600:00
cnnvd
CVE
CVE-2026-39803
13 May 202613:36
cve
EUVD
EUVD-2026-29950
19 May 202619:23
euvd
Github Security Blog
Bandit: Unauthenticated one-shot DoS via `Transfer-Encoding: chunked`
19 May 202619:23
github
NVD
CVE-2026-39803
13 May 202614:17
nvd
OSV
EEF-CVE-2026-39803 HTTP/1 chunked body reader ignores length cap in bandit
13 May 202613:36
osv
OSV
GHSA-9Q9Q-324X-93R2 Bandit: Unauthenticated one-shot DoS via `Transfer-Encoding: chunked`
19 May 202619:23
osv
Positive Technologies
PT-2026-40607
13 May 202600:00
ptsecurity
Rows per page
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:mtrudel:bandit:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Bandit.HTTP1.Socket'"
    ],
    "packageName": "bandit",
    "packageURL": "pkg:hex/bandit",
    "product": "bandit",
    "programFiles": [
      "lib/bandit/http1/socket.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Bandit.HTTP1.Socket':read_data/2"
      },
      {
        "name": "'Elixir.Bandit.HTTP1.Socket':do_read_chunked_data!/5"
      }
    ],
    "repo": "https://github.com/mtrudel/bandit",
    "vendor": "mtrudel",
    "versions": [
      {
        "lessThan": "1.11.1",
        "status": "affected",
        "version": "1.4.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:mtrudel:bandit:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Bandit.HTTP1.Socket'"
    ],
    "packageName": "mtrudel/bandit",
    "packageURL": "pkg:github/mtrudel/bandit",
    "product": "bandit",
    "programFiles": [
      "lib/bandit/http1/socket.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Bandit.HTTP1.Socket':read_data/2"
      },
      {
        "name": "'Elixir.Bandit.HTTP1.Socket':do_read_chunked_data!/5"
      }
    ],
    "repo": "https://github.com/mtrudel/bandit",
    "vendor": "mtrudel",
    "versions": [
      {
        "lessThan": "ae3520dfdbfab115c638f8c7f6f6b805db34e1ab",
        "status": "affected",
        "version": "903e209a521bc216b9f9065c01ae9a0cac2d5a10",
        "versionType": "git"
      }
    ]
  }
]

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