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CVE-2022-30635

Status: ModifiedHigh (7.5)—

Uncontrolled recursion in Decoder.Decode in encoding/gob before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via a message which contains deeply nested structures.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Golang — GO

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2022-30635",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-30635",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-06T17:44:14.218881Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@golang.org",
      "affectedData": [
        {
          "vendor": "Go standard library",
          "product": "encoding/gob",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.17.12",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "1.18.0-0",
              "lessThan": "1.18.4",
              "versionType": "semver"
            }
          ],
          "packageName": "encoding/gob",
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "Decoder.decIgnoreOpFor"
            },
            {
              "name": "Decoder.compileIgnoreSingle"
            },
            {
              "name": "Decoder.compileDec"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-08-10T20:15:42.640",
  "references": [
    {
      "url": "https://go.dev/cl/417064",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security@golang.org"
    },
    {
      "url": "https://go.dev/issue/53615",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "security@golang.org"
    },
    {
      "url": "https://go.googlesource.com/go/+/6fa37e98ea4382bf881428ee0c150ce591500eb7",
      "tags": [
        "Mailing List",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security@golang.org"
    },
    {
      "url": "https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "source": "security@golang.org"
    },
    {
      "url": "https://pkg.go.dev/vuln/GO-2022-0526",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@golang.org"
    },
    {
      "url": "https://go.dev/cl/417064",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://go.dev/issue/53615",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://go.googlesource.com/go/+/6fa37e98ea4382bf881428ee0c150ce591500eb7",
      "tags": [
        "Mailing List",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://pkg.go.dev/vuln/GO-2022-0526",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-674"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-674"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Uncontrolled recursion in Decoder.Decode in encoding/gob before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via a message which contains deeply nested structures."
    },
    {
      "lang": "es",
      "value": "Una recursión no controlada en el archivo Decoder.Decode en encoding/gob versiones anteriores a Go 1.17.12 y Go 1.18.4, permite a un atacante causar un pánico debido al agotamiento de la pila por medio de un mensaje que contiene estructuras profundamente anidadas"
    }
  ],
  "lastModified": "2026-06-17T04:43:59.430",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "646881F6-A299-4D92-A1F3-E95959FA426F",
              "versionEndExcluding": "1.17.12"
            },
            {
              "criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FE088A2D-7894-4A48-887C-36DD727A7BEB",
              "versionEndExcluding": "1.18.4",
              "versionStartIncluding": "1.18.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@golang.org"
}