CVE-2022-30635 (GCVE-0-2022-30635)

Vulnerability from cvelistv5 – Published: 2022-08-09 20:16 – Updated: 2026-03-06 17:44
VLAI
Title
Stack exhaustion when decoding certain messages in encoding/gob
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-06 17:44 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Go standard library encoding/gob Affected: 0 , < 1.17.12 (semver)
Affected: 1.18.0-0 , < 1.18.4 (semver)
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                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-03-06T17:44:14.218881Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-674",
                    "description": "CWE-674 Uncontrolled Recursion",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-03-06T17:43:54.585Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://pkg.go.dev",
              "defaultStatus": "unaffected",
              "packageName": "encoding/gob",
              "product": "encoding/gob",
              "programRoutines": [
                {
                  "name": "Decoder.decIgnoreOpFor"
                },
                {
                  "name": "Decoder.compileIgnoreSingle"
                },
                {
                  "name": "Decoder.compileDec"
                }
              ],
              "vendor": "Go standard library",
              "versions": [
                {
                  "lessThan": "1.17.12",
                  "status": "affected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThan": "1.18.4",
                  "status": "affected",
                  "version": "1.18.0-0",
                  "versionType": "semver"
                }
              ]
            }
          ],
          "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."
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "description": "CWE-674: Uncontrolled Recursion",
                  "lang": "en"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-06-12T19:04:46.476Z",
            "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
            "shortName": "Go"
          },
          "references": [
            {
              "url": "https://go.dev/cl/417064"
            },
            {
              "url": "https://go.googlesource.com/go/+/6fa37e98ea4382bf881428ee0c150ce591500eb7"
            },
            {
              "url": "https://go.dev/issue/53615"
            },
            {
              "url": "https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE"
            },
            {
              "url": "https://pkg.go.dev/vuln/GO-2022-0526"
            }
          ],
          "title": "Stack exhaustion when decoding certain messages in encoding/gob"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "assignerShortName": "Go",
        "cveId": "CVE-2022-30635",
        "datePublished": "2022-08-09T20:16:05.000Z",
        "dateReserved": "2022-05-12T00:00:00.000Z",
        "dateUpdated": "2026-03-06T17:44:24.600Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.