CVE-2026-46378: medium-severity vulnerability in TomWright dasel
Dasel: Denial of service in dasel selector lexer due to infinite loop on unterminated regex literal
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.2epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
TomWright · daselRelated CVEs — TomWright dasel
In the same product, most dangerous first.
CVE-2026-33320MEDIUMDasel has unbounded YAML alias expansion in dasel leads to CPU/memory denial of serviceEPSS 0.2%CVE-2026-62866MEDIUMDasel: Selector lexer panics on trailing whitespace in `parseCurRune`EPSS 0.2%CVE-2026-46377MEDIUMDasel: Index-out-of-range panic in dasel selector lexer on trailing backslash in quoted stringEPSS 0.2%CVE-2026-59168MEDIUMDasel: Unbounded recursion in JSON and XML readers causes unrecoverable stack-overflow DoSEPSS 0.1%