Bug 2571114 (CVE-2026-124992)

Summary: CVE-2026-124992 nushell: nu-json: nushell: Data manipulation via improper character escaping in nu-json
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the nu-json component of nushell. The escape_bytes function fails to properly neutralize control and escape sequences during data serialization. A local attacker can exploit this vulnerability by supplying crafted input, allowing them to manipulate the structure or integrity of the generated JSON output.
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Description OSIDB Bzimport 2026-11-10 20:41:10 UTC
A vulnerability was identified in nushell up to 0.116.1. Impacted is the function escape_bytes of the file crates/nu-json/src/ser.rs of the component Data Conversion Handler. The manipulation leads to improper neutralization of escape, meta, or control sequences. The attack must be carried out locally. The pull request to fix this issue awaits acceptance.