FKIE_CVE-2026-32283

Vulnerability from fkie_nvd - Published: 2026-04-08 02:16 - Updated: 2026-04-16 19:12
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.
References
security@golang.orghttps://go.dev/cl/763767Patch
security@golang.orghttps://go.dev/issue/78334Issue Tracking
security@golang.orghttps://groups.google.com/g/golang-announce/c/0uYbvbPZRWURelease Notes, Mailing List
security@golang.orghttps://pkg.go.dev/vuln/GO-2026-4870Vendor Advisory
Impacted products
Vendor Product Version
golang go *
golang go *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C6C9C072-9817-402D-877F-F83584B07017",
              "versionEndExcluding": "1.25.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "39FE9BAF-55E9-43AA-B14E-239E7EF1D65D",
              "versionEndExcluding": "1.26.2",
              "versionStartIncluding": "1.26.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3."
    }
  ],
  "id": "CVE-2026-32283",
  "lastModified": "2026-04-16T19:12:10.540",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
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        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-08T02:16:03.580",
  "references": [
    {
      "source": "security@golang.org",
      "tags": [
        "Patch"
      ],
      "url": "https://go.dev/cl/763767"
    },
    {
      "source": "security@golang.org",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://go.dev/issue/78334"
    },
    {
      "source": "security@golang.org",
      "tags": [
        "Release Notes",
        "Mailing List"
      ],
      "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
    },
    {
      "source": "security@golang.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://pkg.go.dev/vuln/GO-2026-4870"
    }
  ],
  "sourceIdentifier": "security@golang.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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