CVE-2026-46377— Dasel: Index-out-of-range panic in dasel selector lexer on trailing backslash in quoted string
Quick assessment
Affected
TomWright dasel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
tomwright dasel是tomwright个人开发者开源的一个命令行数据查询与转换工具。 tomwright dasel 3.0.0版本至3.10.1之前版本存在输入验证错误漏洞，该漏洞源于转义序列处理程序在边界检查中读取越界，允许攻击者控制的selector字符串触发Go索引越界导致内核崩溃。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-46377
Vulnerability Information
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Vulnerability Title
Dasel: Index-out-of-range panic in dasel selector lexer on trailing backslash in quoted string
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对数组索引的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
tomwright dasel 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
tomwright dasel是tomwright个人开发者开源的一个命令行数据查询与转换工具。 tomwright dasel 3.0.0版本至3.10.1之前版本存在输入验证错误漏洞，该漏洞源于转义序列处理程序在边界检查中读取越界，允许攻击者控制的selector字符串触发Go索引越界导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-46377
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Patches & Fixes for CVE-2026-46377 (1)
Vendor Advisories for CVE-2026-46377 (1)
Vendor Pages for CVE-2026-46377 (1)
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🔗 Release v3.10.1 · TomWright/dasel · GitHub x_refsource_MISC
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V. Comments for CVE-2026-46377
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