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CVE-2026-55204

🗓️ 18 Jun 2026 16:05:52Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 4 Views

HAProxy 3.4.0 has a null pointer dereference in hpack_dht_insert under memory exhaustion.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-55204
18 Jun 202616:05
attackerkb
Cvelist
CVE-2026-55204 HAProxy - NULL Pointer Dereference in hpack_dht_insert Function
18 Jun 202616:05
cvelist
EUVD
EUVD-2026-37906
18 Jun 202616:05
euvd
NVD
CVE-2026-55204
18 Jun 202617:16
nvd
Positive Technologies
PT-2026-50708
18 Jun 202600:00
ptsecurity
Vulnrichment
CVE-2026-55204 HAProxy - NULL Pointer Dereference in hpack_dht_insert Function
18 Jun 202616:05
vulnrichment
Vulners
CNA
Node
haproxyhaproxyRange03.4.0
[
  {
    "vendor": "haproxy",
    "product": "haproxy",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "version": "0",
        "status": "affected",
        "versionType": "semver",
        "lessThanOrEqual": "3.4.0"
      },
      {
        "status": "unaffected",
        "version": "9a6d1fe3f00d86ab4ea6ea6ea0a5d48fc058a513",
        "versionType": "git"
      }
    ],
    "repo": "https://github.com/haproxy/haproxy"
  }
]

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18 Jun 2026 18:16Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.17.5
CVSS 48.7
SSVC
4