CVE-2026-62866

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62866", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-14T21:10:50.032Z", "datePublished": "2026-09-21T16:51:18.520Z", "dateUpdated": "2026-09-21T18:00:18.178Z"}, "containers": {"cna": {"title": "Dasel: Selector lexer panics on trailing whitespace in `parseCurRune`", "problemTypes": [{"descriptions": [{"cweId": "CWE-129", "lang": "en", "description": "CWE-129: Improper Validation of Array Index", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc"}, {"name": "https://github.com/TomWright/dasel/commit/eee03aec28d4a33d6138098d065b7b37b85e3c55", "tags": ["x_refsource_MISC"], "url": "https://github.com/TomWright/dasel/commit/eee03aec28d4a33d6138098d065b7b37b85e3c55"}, {"name": "https://github.com/TomWright/dasel/releases/tag/v3.11.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/TomWright/dasel/releases/tag/v3.11.2"}], "affected": [{"vendor": "TomWright", "product": "dasel", "versions": [{"version": ">= 3.0.0, < 3.11.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-21T16:55:00.169Z"}, "descriptions": [{"lang": "en", "value": "Dasel is a command-line tool and library for querying, modifying, and transforming data structures. From 3.0.0 until 3.11.2, selector/lexer/tokenize.go parseCurRune advances the input index across trailing whitespace and then reads the source at the exhausted index without an end-of-input check. A selector ending in whitespace, including input passed through lexer.NewTokenizer(...).Tokenize() or dasel.Query, can therefore cause an index-out-of-range panic and terminate the process. This issue is fixed in version 3.11.2."}], "source": {"advisory": "GHSA-65gg-g7rw-6cpc", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-21T17:59:52.863215Z", "id": "CVE-2026-62866", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T18:00:18.178Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-62866", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-21T17:59:52.863215Z"}}}], "references": [{"url": "https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T18:00:12.733Z"}}], "cna": {"title": "Dasel: Selector lexer panics on trailing whitespace in `parseCurRune`", "source": {"advisory": "GHSA-65gg-g7rw-6cpc", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/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"}}], "affected": [{"vendor": "TomWright", "product": "dasel", "versions": [{"status": "affected", "version": ">= 3.0.0, < 3.11.2"}]}], "references": [{"url": "https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc", "name": "https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/TomWright/dasel/commit/eee03aec28d4a33d6138098d065b7b37b85e3c55", "name": "https://github.com/TomWright/dasel/commit/eee03aec28d4a33d6138098d065b7b37b85e3c55", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/TomWright/dasel/releases/tag/v3.11.2", "name": "https://github.com/TomWright/dasel/releases/tag/v3.11.2", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "Dasel is a command-line tool and library for querying, modifying, and transforming data structures. From 3.0.0 until 3.11.2, selector/lexer/tokenize.go parseCurRune advances the input index across trailing whitespace and then reads the source at the exhausted index without an end-of-input check. A selector ending in whitespace, including input passed through lexer.NewTokenizer(...).Tokenize() or dasel.Query, can therefore cause an index-out-of-range panic and terminate the process. This issue is fixed in version 3.11.2."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-129", "description": "CWE-129: Improper Validation of Array Index"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-21T16:55:00.169Z"}}}, "cveMetadata": {"cveId": "CVE-2026-62866", "state": "PUBLISHED", "dateUpdated": "2026-09-21T18:00:18.178Z", "dateReserved": "2026-07-14T21:10:50.032Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-09-21T16:51:18.520Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "dasel", "vendor": "TomWright", "versions": [{"status": "affected", "version": ">= 3.0.0, < 3.11.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Dasel is a command-line tool and library for querying, modifying, and transforming data structures. From 3.0.0 until 3.11.2, selector/lexer/tokenize.go parseCurRune advances the input index across trailing whitespace and then reads the source at the exhausted index without an end-of-input check. A selector ending in whitespace, including input passed through lexer.NewTokenizer(...).Tokenize() or dasel.Query, can therefore cause an index-out-of-range panic and terminate the process. This issue is fixed in version 3.11.2."}], "id": "CVE-2026-62866", "lastModified": "2026-09-24T21:25:27.050", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62866", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-21T17:59:52.863215Z", "version": "2.0.3"}}]}, "published": "2026-09-21T17:17:38.053", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/TomWright/dasel/commit/eee03aec28d4a33d6138098d065b7b37b85e3c55"}, {"source": "security-advisories@github.com", "url": "https://github.com/TomWright/dasel/releases/tag/v3.11.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-129"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.0.0,3.11.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "dasel", "source": "cna", "vendor": "TomWright"}, "product": "dasel", "vendor": "tomwright"}], "created": "2026-09-21T18:30:17.561326+00:00", "updated": "2026-09-21T19:30:15.034719+00:00", "vendors": ["tomwright", "tomwright$PRODUCT$dasel"]}