Vulnerability in Tomwright Dasel
CVE-2026-46377
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.
EPSS: 0.002 (8.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Tomwright Dasel — versions >= 3.0.0, < 3.10.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-46377?
- CVE-2026-46377 is a medium-severity vulnerability in Tomwright Dasel, classified under Improper Validation of Array Index. CVSS score: 6.2/10. Published 2026-07-16.
- How severe is CVE-2026-46377?
- Medium severity. CVSS v3 base score is 6.2 out of 10.