TomWright dasel up to 3.10.0 Escape Sequence tokenize.go parseCurRune memory corruption

Summaryinfo

A vulnerability, which was classified as problematic, was found in TomWright dasel up to 3.10.0. This affects the function parseCurRune of the file selector/lexer/tokenize.go of the component Escape Sequence Handler. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2026-46377. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in TomWright dasel up to 3.10.0. This vulnerability affects the function parseCurRune of the file selector/lexer/tokenize.go of the component Escape Sequence Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-46377 since 05/13/2026. The exploitation appears to be easy. The attack needs to be approached locally. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 3.10.1 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• TomWright

Name

• dasel

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10.0

Website

• Product: https://github.com/TomWright/dasel/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion