Vulnerability · Published Feb 10, 2026 · Assigned by GitHub_M

CVE-2026-25805Zed does not show Parameter Values for MCP Tool Calls. Users cannot detect tool poisoning.

Medium 6.4

In plain English

A medium-severity security flaw in zed from zed-industries. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)0.3%top 78.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
zed-industries	zed	< 0.219.4

Weakness: CWE-356 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

References

https://github.com/zed-industries/zed/security/advisories/GHSA-f2g4-87h6-4pxq x_refsource_CONFIRM