CVE-2026-27976: high-severity vulnerability in zed-industries zed
Zed Extension Sandbox Escape via Tar Symlink Following
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.7%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
zed-industries · zedRelated CVEs — zed-industries zed
In the same product, most dangerous first.
CVE-2026-44462MEDIUMZed: Allowlist Bypass via Bash Variable Expansion Chain in Terminal Tool PermissionsEPSS 0.4%CVE-2026-27800HIGHZed has Zip Slip Path Traversal in Extension Archive ExtractionEPSS 0.4%CVE-2026-27967HIGHSymlink Escape in Agent File ToolsEPSS 0.3%CVE-2026-44465HIGHZed: Zed IDE Arbitrary Code Execution via untrusted repository with poisoned .git/configEPSS 0.3%CVE-2026-25805MEDIUMZed does not show Parameter Values for MCP Tool Calls. Users cannot detect tool poisoning.EPSS 0.3%CVE-2025-68433HIGHZed IDE MCP Context Server Configuration Arbitrary Code ExecutionEPSS 0.3%