What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-16 · updated 2026-10-24
• Weakness: CWE-129

Description

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 p.src[pos] without a bounds check, allowing attacker-controlled selector strings to trigger a Go index-out-of-range panic. This issue is fixed in version 3.10.1.

Affected products

• TomWright dasel: from 3.0.0, < 3.10.1

References

• https://github.com/TomWright/dasel/commit/5fc1172287df89860caf139b146007d7ed12178c
• https://github.com/TomWright/dasel/releases/tag/v3.10.1
• https://github.com/TomWright/dasel/security/advisories/GHSA-m5j3-4634-c2vq
• https://github.com/TomWright/dasel/security/advisories/GHSA-m5j3-4634-c2vq

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