CVE-2026-5619Public exploit

Local command execution via unchecked summarize_command input

Published Apr 6, 2026 · Updated Apr 6, 2026

OS command injection in Braffolk mcp-summarization-functions 0.1.0 through 0.1.5 allows local users to execute commands. The summarize_command handler in src/server/mcp-server.ts passes its caller-controlled command value directly to execa without an allowlist or neutralization. Access to the local MCP tool is required, and injected commands run with the server process's privileges, permitting data access, modification, or service interruption.

CVSS severity5.3
Medium
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Braffolk mcp-summarization-functions 0.1.0 through 0.1.5 allows local users to execute commands. The summarize_command handler in src/server/mcp-server.ts passes its caller-controlled command value directly to execa without an allowlist or neutralization. Access to the local MCP tool is required, and injected commands run with the server process's privileges, permitting data access, modification, or service interruption.

The record

CVE
CVE-2026-5619
Published
Apr 6, 2026
Updated
Apr 6, 2026
Vendor
Braffolk
Product
mcp-summarization-functions
Classifications
CWE-78, T1059
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 6, 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=0.1.0
  2. Affected versionversion=0.1.1
  3. Affected versionversion=0.1.2
  4. Affected versionversion=0.1.3
  5. Affected versionversion=0.1.4
  6. Affected versionversion=0.1.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Braffolk · mcp-summarization-functionsversion=0.1.0; version=0.1.1; version=0.1.2; version=0.1.3; version=0.1.4; version=0.1.5

Published CVSS scores

5.3Positive TechnologiesCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command 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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