FKIE_CVE-2026-16651

Vulnerability from fkie_nvd - Published: 2026-09-21 12:17 - Updated: 2026-09-22 19:40
Severity
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
temporalio/sqlparser can panic when Parse, ParseStrictDDL, or ParseNext processes a MySQL version comment whose contents are empty or consist only of one to five decimal digits. ExtractMysqlComment does not check the -1 result returned by strings.IndexFunc before using it as a slice boundary. The resulting Go runtime panic propagates unless the caller recovers it on the parsing goroutine, so applications that parse attacker-controlled SQL can terminate. Temporal Server exposes the affected parser through ListWorkers. When that API is enabled, an authenticated caller with namespace read permission can submit a malformed query that terminates the receiving Matching process. Repeated requests can sustain a denial of service. The issue affects availability only; no confidentiality or integrity impact was identified.
References
security@temporal.iohttps://github.com/temporalio/sqlparser/commit/74181ffcbaaf0c52faa925f4cf27ed6c0c2be86f
security@temporal.iohttps://github.com/temporalio/sqlparser/pull/5
security@temporal.iohttps://github.com/temporalio/sqlparser/tree/v0.1.0
security@temporal.iohttps://github.com/temporalio/temporal/pull/11090
security@temporal.iohttps://github.com/temporalio/temporal/pull/11190
security@temporal.iohttps://github.com/temporalio/temporal/releases/tag/v1.30.7
security@temporal.iohttps://github.com/temporalio/temporal/releases/tag/v1.31.3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "modules": [
            "Parser"
          ],
          "packageName": "github.com/temporalio/sqlparser",
          "product": "temporalio/sqlparser",
          "programFiles": [
            "comments.go",
            "token.go"
          ],
          "programRoutines": [
            {
              "name": "ExtractMysqlComment"
            },
            {
              "name": "Tokenizer.scanMySQLSpecificComment"
            },
            {
              "name": "Parse"
            },
            {
              "name": "ParseStrictDDL"
            },
            {
              "name": "ParseNext"
            }
          ],
          "repo": "https://github.com/temporalio/sqlparser",
          "vendor": "Temporal Technologies, Inc.",
          "versions": [
            {
              "lessThan": "0.0.0-20260721183040-74181ffcbaaf",
              "status": "affected",
              "version": "0.0.0-20180604150908-b055e9c9b4fa",
              "versionType": "semver"
            }
          ]
        },
        {
          "collectionURL": "https://pkg.go.dev",
          "cpes": [
            "cpe:2.3:a:temporal:temporal:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unaffected",
          "modules": [
            "Matching"
          ],
          "packageName": "go.temporal.io/server",
          "product": "Temporal Server",
          "programFiles": [
            "service/matching/handler.go",
            "service/matching/workers/worker_query_engine.go"
          ],
          "programRoutines": [
            {
              "name": "Handler.ListWorkers"
            },
            {
              "name": "getWhereCause"
            }
          ],
          "repo": "https://github.com/temporalio/temporal",
          "vendor": "Temporal Technologies, Inc.",
          "versions": [
            {
              "lessThanOrEqual": "1.29.7",
              "status": "affected",
              "version": "1.29.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.30.7",
              "status": "affected",
              "version": "1.30.0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.31.3",
              "status": "affected",
              "version": "1.31.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@temporal.io"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "temporalio/sqlparser can panic when Parse, ParseStrictDDL, or ParseNext processes a MySQL version comment whose contents are empty or consist only of one to five decimal digits. ExtractMysqlComment does not check the -1 result returned by strings.IndexFunc before using it as a slice boundary. The resulting Go runtime panic propagates unless the caller recovers it on the parsing goroutine, so applications that parse attacker-controlled SQL can terminate. Temporal Server exposes the affected parser through ListWorkers. When that API is enabled, an authenticated caller with namespace read permission can submit a malformed query that terminates the receiving Matching process. Repeated requests can sustain a denial of service. The issue affects availability only; no confidentiality or integrity impact was identified."
    }
  ],
  "id": "CVE-2026-16651",
  "lastModified": "2026-09-22T19:40:05.870",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security@temporal.io",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-16651",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-21T15:32:17.328992Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-21T12:17:10.167",
  "references": [
    {
      "source": "security@temporal.io",
      "url": "https://github.com/temporalio/sqlparser/commit/74181ffcbaaf0c52faa925f4cf27ed6c0c2be86f"
    },
    {
      "source": "security@temporal.io",
      "url": "https://github.com/temporalio/sqlparser/pull/5"
    },
    {
      "source": "security@temporal.io",
      "url": "https://github.com/temporalio/sqlparser/tree/v0.1.0"
    },
    {
      "source": "security@temporal.io",
      "url": "https://github.com/temporalio/temporal/pull/11090"
    },
    {
      "source": "security@temporal.io",
      "url": "https://github.com/temporalio/temporal/pull/11190"
    },
    {
      "source": "security@temporal.io",
      "url": "https://github.com/temporalio/temporal/releases/tag/v1.30.7"
    },
    {
      "source": "security@temporal.io",
      "url": "https://github.com/temporalio/temporal/releases/tag/v1.31.3"
    }
  ],
  "sourceIdentifier": "security@temporal.io",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-129"
        }
      ],
      "source": "security@temporal.io",
      "type": "Secondary"
    }
  ]
}



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