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CVE-2026-33555

🗓️ 13 Apr 2026 00:00:00Reported by mitreType 
cve
 cve
🔗 web.nvd.nist.gov📰️ 5 Media mentions👁 70 Views

HAProxy before 3.3.6 does not verify body length against content-length on empty-payload stream close, enabling request smuggling.

Related
Detection
Affected
Refs
Social
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-33555
13 Apr 202600:00
attackerkb
CBLMariner
CVE-2026-33555 affecting package haproxy for versions less than 2.9.11-5
9 May 202603:31
cbl_mariner
Circl
CVE-2026-33555
16 Apr 202620:00
circl
CNNVD
HAProxy 安全漏洞
13 Apr 202600:00
cnnvd
Cvelist
CVE-2026-33555
13 Apr 202600:00
cvelist
Debian
[SECURITY] [DSA 6291-1] haproxy security update
22 May 202620:18
debian
Debian CVE
CVE-2026-33555
13 Apr 202600:00
debiancve
Tenable Nessus
Debian dsa-6291 : haproxy - security update
25 May 202600:00
nessus
Tenable Nessus
Fedora 43 : haproxy (2026-164a1e3151)
27 May 202600:00
nessus
Tenable Nessus
Fedora 44 : haproxy (2026-53196fc291)
27 May 202600:00
nessus
Rows per page
Vulners
CNA
Node
haproxyhaproxyRange2.63.3.6
[
  {
    "defaultStatus": "unaffected",
    "product": "HAProxy",
    "vendor": "HAProxy",
    "versions": [
      {
        "lessThan": "3.3.6",
        "status": "affected",
        "version": "2.6",
        "versionType": "custom"
      }
    ]
  }
]

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22 Apr 2026 19:17Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14
EPSS0.00013
SSVC
70