CVE-2026-35582Public exploit

Local command execution via unsafe file endings

Published Apr 18, 2026 · Updated Apr 18, 2026

OS command injection in Emissary 8.42.0 and earlier allows local users to execute commands through crafted place configuration. Executrix.getCommand() substitutes temporary paths derived from unvalidated IN_FILE_ENDING and OUT_FILE_ENDING values into a /bin/sh -c command string. Place configuration authorship is required, and injected shell metacharacters run in the JVM process's security context when the place processes a payload.

CVSS severity8.8
High
EPSS probability0.86%
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 Emissary 8.42.0 and earlier allows local users to execute commands through crafted place configuration. Executrix.getCommand() substitutes temporary paths derived from unvalidated IN_FILE_ENDING and OUT_FILE_ENDING values into a /bin/sh -c command string. Place configuration authorship is required, and injected shell metacharacters run in the JVM process's security context when the place processes a payload.

The record

CVE
CVE-2026-35582
Published
Apr 18, 2026
Updated
Apr 18, 2026
Vendor
National Security Agency
Product
Emissary
Classifications
CWE-78, CWE-116, T1059.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 18, 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=< 8.43.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

National Security Agency · Emissaryversion=< 8.43.0

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
CWE-116Improper Encoding or Escaping of Output
T1059.004Unix Shell

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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