{
  "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-2026-55952",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-55952",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-02T16:06:08.474Z",
    "updatedAt": "2026-07-24T14:14:09.990Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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": "TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension",
      "summary": "The Erlang/OTP ssl application does not validate that the PSK identity list and binder list carried in a TLS 1.3 ClientHello pre-shared key extension have equal length before passing them to the session ticket handler. In tls_handshake_1_3:handle_pre_shared_key/3, an OfferedPreSharedKeys record with a mismatched number of identities and binders is forwarded directly to tls_server_session_ticket:use/4, which crashes the session ticket handler process.\n\nAn unauthenticated remote attacker can send a single crafted ClientHello to a TLS 1.3 server with session tickets enabled (stateful or stateless mode) and permanently disrupt session ticket handling on that listener. New TLS 1.3 handshakes complete but subsequently crash when the server attempts to issue a session ticket, effectively making TLS 1.3 unusable on the affected listener until the ssl application is restarted. TLS 1.2 connections are not affected.\n\nThis issue affects OTP from OTP 22.2 before OTP 29.0.3, OTP 28.5.0.3 and OTP 27.3.4.14, corresponding to ssl from 9.5 before 11.7.3, 11.6.0.3 and 11.2.12.10.",
      "affected": [
        {
          "vendor": "Erlang",
          "product": "OTP",
          "packageName": "ssl",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9.5",
              "status": "affected",
              "versionType": "otp",
              "lessThan": "*",
              "changes": [
                {
                  "at": "11.7.3",
                  "status": "unaffected"
                },
                {
                  "at": "11.6.0.3",
                  "status": "unaffected"
                },
                {
                  "at": "11.2.12.10",
                  "status": "unaffected"
                }
              ]
            }
          ]
        },
        {
          "vendor": "Erlang",
          "product": "OTP",
          "packageName": "erlang/otp",
          "collectionURL": "https://github.com",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "22.2",
              "status": "affected",
              "versionType": "otp",
              "lessThan": "*",
              "changes": [
                {
                  "at": "29.0.3",
                  "status": "unaffected"
                },
                {
                  "at": "28.5.0.3",
                  "status": "unaffected"
                },
                {
                  "at": "27.3.4.14",
                  "status": "unaffected"
                }
              ]
            },
            {
              "version": "339a279f02ce38a7b23010e56000613e19abb21f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "*",
              "changes": [
                {
                  "at": "e77823e6d980b2ec0b4fe4ea3f2d098ca239e3ce",
                  "status": "unaffected"
                },
                {
                  "at": "2c3e599797644310e5d4aa39c7193420e59dadff",
                  "status": "unaffected"
                },
                {
                  "at": "9b5437c72fa3403a75c1aba28e5c532bc191c662",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  }
}