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Medium 6.4Published Feb 10, 2026

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

Updated under an hour ago ()

Does this affect you?

It affects zed-industries zed and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-356
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Feb 10, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
zed-industries zed
zed_industries:zed (from the name)
before 0.219.4
CNA record
zed zed
zed:zed
before 0.219.4
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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