CVE-2026-19281Public exploit

Local command execution via outputDir interpolation

Published Aug 8, 2026 · Updated Aug 8, 2026

Command injection in Slidev Builder MCP 2.1.0 allows local users to execute arbitrary shell commands through a crafted outputDir. The generateChart function joins outputDir into a Python script path, interpolates that path into a shell command, and passes it to execAsync. A caller must already be able to invoke the local generateAssets tool with assetType set to chart; injected commands run with the MCP server process privileges.

CVSS severityUnavailable
Unscored
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Slidev Builder MCP 2.1.0 allows local users to execute arbitrary shell commands through a crafted outputDir. The generateChart function joins outputDir into a Python script path, interpolates that path into a shell command, and passes it to execAsync. A caller must already be able to invoke the local generateAssets tool with assetType set to chart; injected commands run with the MCP server process privileges.

The record

CVE
CVE-2026-19281
Published
Aug 8, 2026
Updated
Aug 8, 2026
Vendor
Hatch Ltd
Product
Slidev Builder MCP
Classifications
CWE-74, T1059
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 8, 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=2.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Hatch Ltd · Slidev Builder MCPversion=2.1.0

Published CVSS scores

1.9INCIBE-CERTCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059Command and Scripting Interpreter

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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