{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-110353",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-110353",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-22T02:53:33.198Z",
    "updatedAt": "2026-10-22T19:10:34.428Z",
    "importedAt": "2026-10-24T01:57:50.502Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": null,
      "summary": "HAProxy 3.2 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (worker-thread CPU exhaustion) via a truncated HTTP/2 PING frame. h2c_handle_ping in src/mux_h2.c does not check for a short read, unlike the other H2 frame handlers. Because the incomplete frame cannot be processed, its data is never consumed, and the H2 multiplexer tasklet is repeatedly woken by that pending data without making progress. The CPU spins until timeout http-request closes the connection, and an attacker opening many such connections can sustain high CPU usage.",
      "affected": [
        {
          "vendor": "HAProxy",
          "product": "HAProxy",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.2.26"
            },
            {
              "version": "3.3.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.3.17"
            },
            {
              "version": "3.4.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.4.6"
            },
            {
              "version": "3.5-dev",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.5-dev9"
            }
          ]
        },
        {
          "vendor": "HAProxy",
          "product": "HAProxy Enterprise Edition",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3.2.0r1",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.2r1-378.1259"
            },
            {
              "version": "3.3.0r1",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.3r1-377.1005"
            }
          ]
        },
        {
          "vendor": "HAProxy",
          "product": "Kubernetes Ingress Controller",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.2.17"
            }
          ]
        },
        {
          "vendor": "Haproxy",
          "product": "Kubernetes Ingress Controller Enterprise",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "3.2.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.2.17-ee1"
            },
            {
              "version": "3.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "3.0.16-ee17"
            },
            {
              "version": "1.11",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "1.11.14-ee11"
            }
          ]
        }
      ]
    }
  }
}