CVE-2026-46377

CVE-2026-46377 (Dasel) : A bug in the escape sequence handling of the selector lexer causes an index-out-of-range panic when a trailing backslash is inside a quoted string. The issue resides in parseCurRune where a backslash path increments pos and then reads p.src[pos] without a bounds check. Af...

CVE-2026-46377 Dasel: Index-out-of-range panic in dasel selector lexer on trailing backslash in quoted string

Dasel is a command-line tool and library for querying, modifying, and transforming data structures. From 3.0.0 until 3.10.1, the escape sequence handler in Tokenizer.parseCurRune in selector/lexer/tokenize.go increments past a trailing backslash in a quoted string such as "\ or '\ and then reads...

CVE-2026-46378 Dasel: Denial of service in dasel selector lexer due to infinite loop on unterminated regex literal

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...

CVE-2026-46378

Dasel (github.com/tomwright/dasel) is affected by CVE-2026-46378 due to a non-terminating loop in the selector lexer when tokenizing an unterminated regex literal (r/). The bug resides in matchRegexPattern inside selector/lexer/tokenize.go, where the loop continues indefinitely if the closing sla...

GO-2026-5491 Dasel: Index-out-of-range panic in dasel selector lexer on trailing backslash in quoted string in github.com/tomwright/dasel

Dasel: Index-out-of-range panic in dasel selector lexer on trailing backslash in quoted string in github.com/tomwright/dasel...

GO-2026-5493 Dasel: Denial of service in dasel selector lexer due to infinite loop on unterminated regex literal in github.com/tomwright/dasel

Dasel: Denial of service in dasel selector lexer due to infinite loop on unterminated regex literal in github.com/tomwright/dasel...

GHSA-M6XR-FVFG-5G64 Dasel: Denial of service in dasel selector lexer due to infinite loop on unterminated regex literal

Summary dasel's selector lexer enters a non-terminating loop when tokenizing an unterminated regex pattern such as r/abc. A 2-byte input r/ is sufficient to cause the tokenizer to consume 100% CPU on one core indefinitely. I confirmed the issue on v3.3.1 fba653c7f248aff10f2b89fca93929b64707dfc8 a...

Dasel: Denial of service in dasel selector lexer due to infinite loop on unterminated regex literal

Summary dasel's selector lexer enters a non-terminating loop when tokenizing an unterminated regex pattern such as r/abc. A 2-byte input r/ is sufficient to cause the tokenizer to consume 100% CPU on one core indefinitely. I confirmed the issue on v3.3.1 fba653c7f248aff10f2b89fca93929b64707dfc8 a...

Dasel: Index-out-of-range panic in dasel selector lexer on trailing backslash in quoted string

Summary dasel's selector lexer panics with an index-out-of-range error when tokenizing a quoted string that ends with a trailing backslash e.g., "\ or '. A 2-byte input causes an immediate process crash via Go runtime panic. I confirmed the issue on v3.3.1 fba653c7f248aff10f2b89fca93929b64707dfc8...

PT-2026-42044

Name of the Vulnerable Software and Affected Versions dasel versions 3.0.0 through 3.3.1 Description The selector lexer contains a flaw that causes a process crash via a Go runtime panic when tokenizing a quoted string that ends with a trailing backslash. This occurs because the escape sequence...