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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-129"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62866.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "3.0.0"
},
{
"fixed": "3.11.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "eee03aec28d4a33d6138098d065b7b37b85e3c55"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v3.11.2",
"range": [
{
"fixed": "008b0ed9cae7d5d5b0c72e23c84836c5b2f0338b"
}
],
"source": "REFERENCES_TAG"
}
]
}