CVE-2026-25805Public exploitNetwork attack vector

Unauthorized tool actions via concealed MCP arguments

Published Feb 10, 2026 · Updated Feb 10, 2026

UI safety failure in Zed before 0.219.4 allows remote authenticated users to conceal malicious MCP tool parameters from users. The MCP tool-call approval and chat-history interfaces omit argument values before and after invocation, preventing inspection of attacker-controlled parameters. Exploitation requires indirect prompt injection from a malicious MCP server and a tool call; manual confirmation still exposes the concealed action, while autoconfirmation also hides its record.

CVSS severity6.4
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UI safety failure in Zed before 0.219.4 allows remote authenticated users to conceal malicious MCP tool parameters from users. The MCP tool-call approval and chat-history interfaces omit argument values before and after invocation, preventing inspection of attacker-controlled parameters. Exploitation requires indirect prompt injection from a malicious MCP server and a tool call; manual confirmation still exposes the concealed action, while autoconfirmation also hides its record.

The record

CVE
CVE-2026-25805
Published
Feb 10, 2026
Updated
Feb 10, 2026
Vendor
Zed Industries
Product
Zed
Classifications
CWE-356
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.219.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zed Industries · Zedversion=< 0.219.4

Published CVSS scores

6.4GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
8.0NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-356Product UI does not Warn User of Unsafe Actions

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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