{"id":"CVE-2026-62866","sourceIdentifier":"security-advisories@github.com","published":"2026-09-21T17:17:38.053","lastModified":"2026-09-24T21:25:27.050","vulnStatus":"Deferred","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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"TomWright","product":"dasel","versions":[{"version":">= 3.0.0, < 3.11.2","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":6.2,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.5,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-21T17:59:52.863215Z","id":"CVE-2026-62866","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-129"}]}],"references":[{"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":"security-advisories@github.com"},{"url":"https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}