{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16651", "assignerOrgId": "61241ed8-fa44-4f23-92db-b8c443751968", "state": "PUBLISHED", "assignerShortName": "Temporal", "dateReserved": "2026-07-22T18:08:54.825Z", "datePublished": "2026-09-21T11:32:44.699Z", "dateUpdated": "2026-09-21T15:32:34.656Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "61241ed8-fa44-4f23-92db-b8c443751968", "shortName": "Temporal", "dateUpdated": "2026-09-21T11:32:44.699Z"}, "title": "temporalio/sqlparser malformed MySQL version comments can cause a panic", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-129", "description": "CWE-129: Improper Validation of Array Index", "type": "CWE"}]}], "impacts": [{"descriptions": [{"lang": "en", "value": "Availability degradation or denial of service caused by an uncaught Go runtime panic. No confidentiality or integrity impact was identified."}]}], "affected": [{"vendor": "Temporal Technologies, Inc.", "product": "temporalio/sqlparser", "collectionURL": "https://pkg.go.dev", "packageName": "github.com/temporalio/sqlparser", "repo": "https://github.com/temporalio/sqlparser", "modules": ["Parser"], "programFiles": ["comments.go", "token.go"], "versions": [{"status": "affected", "version": "0.0.0-20180604150908-b055e9c9b4fa", "lessThan": "0.0.0-20260721183040-74181ffcbaaf", "versionType": "semver"}], "defaultStatus": "unaffected", "programRoutines": [{"name": "ExtractMysqlComment"}, {"name": "Tokenizer.scanMySQLSpecificComment"}, {"name": "Parse"}, {"name": "ParseStrictDDL"}, {"name": "ParseNext"}]}, {"vendor": "Temporal Technologies, Inc.", "product": "Temporal Server", "collectionURL": "https://pkg.go.dev", "packageName": "go.temporal.io/server", "repo": "https://github.com/temporalio/temporal", "modules": ["Matching"], "programFiles": ["service/matching/handler.go", "service/matching/workers/worker_query_engine.go"], "programRoutines": [{"name": "Handler.ListWorkers"}, {"name": "getWhereCause"}], "versions": [{"status": "affected", "version": "1.29.0", "lessThanOrEqual": "1.29.7", "versionType": "semver"}, {"status": "affected", "version": "1.30.0", "lessThan": "1.30.7", "versionType": "semver"}, {"status": "affected", "version": "1.31.0", "lessThan": "1.31.3", "versionType": "semver"}], "defaultStatus": "unaffected", "cpes": ["cpe:2.3:a:temporal:temporal:*:*:*:*:*:*:*:*"]}], "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>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.</p>"}]}], "references": [{"url": "https://github.com/temporalio/sqlparser/pull/5", "name": "sqlparser fix pull request", "tags": ["patch"]}, {"url": "https://github.com/temporalio/sqlparser/commit/74181ffcbaaf0c52faa925f4cf27ed6c0c2be86f", "name": "sqlparser fix commit", "tags": ["patch"]}, {"url": "https://github.com/temporalio/sqlparser/tree/v0.1.0", "name": "Fixed release tag v0.1.0", "tags": ["product"]}, {"url": "https://github.com/temporalio/temporal/pull/11190", "name": "Temporal Server dependency update", "tags": ["patch"]}, {"url": "https://github.com/temporalio/temporal/pull/11090", "name": "Temporal Server matching-handler panic containment", "tags": ["patch"]}, {"url": "https://github.com/temporalio/temporal/releases/tag/v1.30.7", "name": "Temporal Server 1.30.7", "tags": ["release-notes"]}, {"url": "https://github.com/temporalio/temporal/releases/tag/v1.31.3", "name": "Temporal Server 1.31.3", "tags": ["release-notes"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "temporalio/sqlparser reasonable worst-case network service embedding"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.7, "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"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "Temporal Server ListWorkers in a supported authenticated deployment"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 7.1, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}}], "configurations": [{"lang": "en", "value": "The temporalio/sqlparser CVSS scenario uses the reasonable worst case of a network service passing unauthenticated attacker-controlled SQL to the parser without same-goroutine panic recovery. 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Panic recovery does not replace the parser fix.</p>", "base64": false}]}], "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.", "supportingMedia": [{"type": "text/html", "value": "<p>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. 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{"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"}]}

{}