CVE-2026-27976
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Description
Zed, a code editor, has an extension installer allows tar/gzip downloads. Prior to version 0.224.4, the tar extractor (`async_tar::Archive::unpack`) creates symlinks from the archive without validation, and the path guard (`writeable_path_from_extension`) only performs lexical prefix checks without resolving symlinks. An attacker can ship a tar that first creates a symlink inside the extension workdir pointing outside (e.g., `escape -> /`), then writes files through the symlink, causing writes to arbitrary host paths. This escapes the extension sandbox and enables code execution. Version 0.224.4 patches the issue.
Analysis
Zed, a code editor, has an extension installer allows tar/gzip downloads. [CVSS 8.8 HIGH]
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Remediation
Within 24 hours: Inventory all Zed installations across the organization and restrict extension installer access via network controls. Within 7 days: Disable the Zed extension installer feature organization-wide or migrate users to alternative code editors with better security controls. …
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External POC / Exploit Code
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