CVE-2026-46378: Tomwright Dasel

Medium severity, CVSS 6.2. EPSS: 0.2% chance of exploitation in the next 30 days.

Dasel is a command-line tool and library for querying, modifying, and transforming data structures. From 3.0.0 until 3.10.1, the selector lexer matchRegexPattern closure in (*Tokenizer).parseCurRune in selector/lexer/tokenize.go loops while tokenizing an unterminated regex literal such as r/ because peekRuneEqual returns false after the end of input, allowing attacker-controlled selector strings to consume CPU indefinitely. This issue is fixed in version 3.10.1.

Affected products

• Tomwright Dasel: from 3.0.0, before 3.10.1 (fixed in 3.10.1)

Published 2026-07-16. Last modified 2026-07-17.