{"id":"CVE-2026-62866","published":"2026-09-21T17:17:38.053","lastModified":"2026-09-21T18:17:09.753","description":"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.","cvssScore":6.2,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-129"],"vendors":[],"products":[],"references":[{"url":"https://github.com/TomWright/dasel/commit/eee03aec28d4a33d6138098d065b7b37b85e3c55","tags":[]},{"url":"https://github.com/TomWright/dasel/releases/tag/v3.11.2","tags":[]},{"url":"https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc","tags":[]},{"url":"https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc","tags":[]}],"exploitRefs":[{"url":"https://github.com/TomWright/dasel/commit/eee03aec28d4a33d6138098d065b7b37b85e3c55","tags":[]},{"url":"https://github.com/TomWright/dasel/releases/tag/v3.11.2","tags":[]},{"url":"https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc","tags":[]},{"url":"https://github.com/TomWright/dasel/security/advisories/GHSA-65gg-g7rw-6cpc","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw in Dasel allows an attacker to cause a panic due to index-out-of-range errors by providing input ending in whitespace. This matters because it can lead to service disruption.","exploitability":"Exploitation is moderately easy if an attacker can control the input, requiring knowledge of the specific whitespace pattern that triggers the issue.","blast_radius":"If exploited, this could potentially disrupt services using Dasel, but the impact is limited to those applications and environments where untrusted input is processed without proper validation.","remediation":"Update to Dasel version 3.11.2 or later to mitigate the risk of index-out-of-range panics.","tags":["denial-of-service","input-validation","library-vulnerability"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-22T06:22:38.313Z"}}