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CVE-2026-55952 TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension

🗓️ 02 Jul 2026 16:06:08Reported by EEFType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

TLS 1.3 server DoS via mismatched PSK extension in ClientHello causing session ticket crash.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-55952
2 Jul 202616:06
attackerkb
Circl
CVE-2026-55952
2 Jul 202619:21
circl
CVE
CVE-2026-55952
2 Jul 202616:06
cve
Debian CVE
CVE-2026-55952
2 Jul 202616:06
debiancve
EUVD
EUVD-2026-41412
2 Jul 202616:06
euvd
NVD
CVE-2026-55952
2 Jul 202617:17
nvd
OSV
EEF-CVE-2026-55952 TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension
2 Jul 202616:06
osv
Positive Technologies
PT-2026-55272
2 Jul 202600:00
ptsecurity
Vulnrichment
CVE-2026-55952 TLS 1.3 server denial of service via malformed ClientHello pre-shared key extension
2 Jul 202616:06
vulnrichment
[
  {
    "cpes": [
      "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "tls_handshake_1_3"
    ],
    "packageName": "ssl",
    "packageURL": "pkg:otp/ssl?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
    "product": "OTP",
    "programFiles": [
      "src/tls_handshake_1_3.erl"
    ],
    "programRoutines": [
      {
        "name": "tls_handshake_1_3:handle_pre_shared_key/3"
      }
    ],
    "repo": "https://github.com/erlang/otp",
    "vendor": "Erlang",
    "versions": [
      {
        "changes": [
          {
            "at": "11.7.3",
            "status": "unaffected"
          },
          {
            "at": "11.6.0.3",
            "status": "unaffected"
          },
          {
            "at": "11.2.12.10",
            "status": "unaffected"
          }
        ],
        "lessThan": "*",
        "status": "affected",
        "version": "9.5",
        "versionType": "otp"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "tls_handshake_1_3"
    ],
    "packageName": "erlang/otp",
    "packageURL": "pkg:github/erlang/otp",
    "product": "OTP",
    "programFiles": [
      "lib/ssl/src/tls_handshake_1_3.erl"
    ],
    "programRoutines": [
      {
        "name": "tls_handshake_1_3:handle_pre_shared_key/3"
      }
    ],
    "repo": "https://github.com/erlang/otp",
    "vendor": "Erlang",
    "versions": [
      {
        "changes": [
          {
            "at": "29.0.3",
            "status": "unaffected"
          },
          {
            "at": "28.5.0.3",
            "status": "unaffected"
          },
          {
            "at": "27.3.4.14",
            "status": "unaffected"
          }
        ],
        "lessThan": "*",
        "status": "affected",
        "version": "22.2",
        "versionType": "otp"
      },
      {
        "changes": [
          {
            "at": "e77823e6d980b2ec0b4fe4ea3f2d098ca239e3ce",
            "status": "unaffected"
          },
          {
            "at": "2c3e599797644310e5d4aa39c7193420e59dadff",
            "status": "unaffected"
          },
          {
            "at": "9b5437c72fa3403a75c1aba28e5c532bc191c662",
            "status": "unaffected"
          }
        ],
        "lessThan": "*",
        "status": "affected",
        "version": "339a279f02ce38a7b23010e56000613e19abb21f",
        "versionType": "git"
      }
    ]
  }
]

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