Security readout for executives and security teams
Plain-English summary
Zed before 0.225.9 can let its Agent file tools follow project symlinks to files outside the intended project folder. This can expose or modify sensitive local files and may send private content to the LLM, bypassing Zed privacy controls. The vendor states 0.225.9 fixes the issue.
Executive priority
Prioritize patching developer workstations that use Zed with AI Agent features, especially where source code, credentials, or private files are present. This is a high-severity privacy and integrity issue, but the available sources do not show active exploitation.
Technical view
CVE-2026-27967 is a CWE-59 symlink escape in Zed Agent file tools read_file and edit_file. A project containing symbolic links to external paths can cause reads or writes outside the workspace boundary, bypassing file_scan_exclusions and private_files. CVSS 3.1 is 7.1: local attack vector, low complexity, user interaction required, high confidentiality and integrity impact.
Likely exposure
Organizations are exposed if users run Zed versions earlier than 0.225.9 and use Agent file tools on projects containing symlinks to external paths. Risk is higher for developers opening untrusted repositories or using LLM-assisted file editing in sensitive workstations.
Exploitation context
The provided sources do not indicate active exploitation, and this CVE is not marked KEV. Exploitation requires local user interaction with a crafted or unsafe project structure containing symlinks. Impact is primarily local data exposure to the LLM and unauthorized local file modification through Zed Agent tooling.
Researcher notes
The boundary failure is specific to Agent file tools following symlinks outside the project directory. The issue affects Zed versions before 0.225.9. Evidence supports high confidentiality and integrity impact, no availability impact, and user interaction requirement. No public exploit details are included in the provided sources.
Mitigation direction
- Upgrade Zed to version 0.225.9 or later.
- Review the GitHub advisory for vendor-specific guidance.
- Avoid opening untrusted projects in affected Zed versions.
- Inspect projects for symlinks pointing outside the workspace before using Agent file tools.
- Limit LLM-assisted file operations on sensitive workstations until upgraded.
Validation and detection
- Inventory Zed installations and confirm versions are 0.225.9 or later.
- Identify users using Zed Agent read_file or edit_file workflows.
- Review recently opened untrusted repositories for external-path symlinks.
- Check whether private_files or file_scan_exclusions were relied on for sensitive paths.
- Monitor vendor advisory updates for any additional indicators or guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-59: Exact CWE lookup
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Open ATT&CK lookupCVE-2026-27967 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N1.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/zed-industries/zed/security/advisories/GHSA-786m-x2vc-5235CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Link Resolution Before File Access ('Link Following')
Improper Link Resolution Before File Access ('Link Following') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.