CVE-2026-25805CWE-356

Zed does not show Parameter Values for MCP Tool Calls. Users cannot detect tool poisoning.

Medium · published February 10, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
14.9
In the wild
Unconfirmed
What it is

Zed is a multiplayer code editor. Prior to 0.219.4, Zed does not show with which parameters a tool is being invoked, when asking for allowance. Further it does not show after the tool was being invoked, which parameters were used. Thus, maybe unwanted or even malicious values could be used without the user having a chance to notice it. Patched in Zed Editor 0.219.4 which includes expandable tool call details.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00239 · 14.9th percentile
Weakness
CWE-356 · Product UI does not Warn User of Unsafe Actions
Published
2026-02-10T17:27Z
EPSS history
Timeline
  • 10 FEB 17:27Z
    Zed does not show Parameter Values for MCP Tool Calls. Users cannot detect tool poisoning.
    cvelistv5