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CVE-2026-49753 HTTP response smuggling in Mint HTTP/1 client via lenient Content-Length parsing

🗓️ 02 Jun 2026 14:15:17Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 65 Views

HTTP/1.1 content-length parsing accepts +signs, enabling response smuggling on Mint connections.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-49753
2 Jun 202614:15
–attackerkb
circl
Circl
CVE-2026-49753
10 Jul 202600:35
–circl
cnnvd
CNNVD
Mint security vulnerabilities
2 Jun 202600:00
–cnnvd
cve
CVE
CVE-2026-49753
2 Jun 202614:15
–cve
euvd
EUVD
EUVD-2026-33941
9 Jul 202623:19
–euvd
github
Github Security Blog
mint: Content-Length header accepts non-RFC "+" sign prefix
9 Jul 202623:19
–github
mend
Mend
CVE-2026-49753
2 Jun 202614:15
–mend
nvd
NVD
CVE-2026-49753
2 Jun 202616:16
–nvd
osv_cve
osv_cve
CVE-2026-49753 HTTP response smuggling in Mint HTTP/1 client via lenient Content-Length parsing
2 Jun 202614:15
–osv_cve
osv_eef
osv_eef
EEF-CVE-2026-49753 HTTP response smuggling in Mint HTTP/1 client via lenient Content-Length parsing
2 Jun 202614:15
–osv_eef
Rows per page
[
  {
    "collectionURL": "https://repo.hex.pm",
    "cpes": [
      "cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Mint.HTTP1.Parse'"
    ],
    "packageName": "mint",
    "packageURL": "pkg:hex/mint",
    "product": "mint",
    "programFiles": [
      "lib/mint/http1/parse.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Mint.HTTP1.Parse':content_length_header/1"
      }
    ],
    "repo": "https://github.com/elixir-mint/mint",
    "vendor": "elixir-mint",
    "versions": [
      {
        "lessThan": "1.9.0",
        "status": "affected",
        "version": "0.1.0",
        "versionType": "semver"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "'Elixir.Mint.HTTP1.Parse'"
    ],
    "packageName": "elixir-mint/mint",
    "packageURL": "pkg:github/elixir-mint/mint",
    "product": "mint",
    "programFiles": [
      "lib/mint/http1/parse.ex"
    ],
    "programRoutines": [
      {
        "name": "'Elixir.Mint.HTTP1.Parse':content_length_header/1"
      }
    ],
    "repo": "https://github.com/elixir-mint/mint.git",
    "vendor": "elixir-mint",
    "versions": [
      {
        "lessThan": "47e48027480228e4e32a0b4df39db497b4804921",
        "status": "affected",
        "version": "65e0e86d799a6d3b08e4372fccdd9747535e0dd6",
        "versionType": "git"
      }
    ]
  }
]

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