CVE-2026-35582: Emissary is a P2P based data-driven workflow engine

Q: How do I fix CVE-2026-35582?

emissary: upgrade to 8.43.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-35582 being exploited?

CVE-2026-35582 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-35582 affect?

CVE-2026-35582 affects emissary. Severity is high (CVSS 8.8). Emissary is a P2P based data-driven workflow engine. In versions 8.42.0 and below, Executrix.getCommand() is vulnerable to OS command injection because it interpolates temporary file paths into a /bin/sh -c shell command string without any

Q: How urgent is CVE-2026-35582?

Priority 50/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2026-35582 is a high-severity flaw (CVSS 8.8) affecting emissary. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Emissary is a P2P based data-driven workflow engine. In versions 8.42.0 and below, Executrix.getCommand() is vulnerable to OS command injection because it interpolates temporary file paths into a /bin/sh -c shell command string without any escaping or input validation. The IN_FILE_ENDING and OUT_FILE_ENDING configuration keys flow directly into these paths, allowing a place author who can write or modify a .cfg file to inject arbitrary shell met

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-78, CWE-116
Published	2026-04-18
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: nsa

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-18 02:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

nsa emissary UPGRADE

Affected: < 8.43.0

Fixed in: 8.43.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy emissary || rpm -q emissary || emissary --version

2. UPGRADE to 8.43.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade emissary

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade emissary

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-35582?

emissary: upgrade to 8.43.0. Exact commands for each OS are on this page.

Is CVE-2026-35582 being exploited?

CVE-2026-35582 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-35582 affect?

CVE-2026-35582 affects emissary. Severity is high (CVSS 8.8). Emissary is a P2P based data-driven workflow engine. In versions 8.42.0 and below, Executrix.getCommand() is vulnerable to OS command injection because it interpolates temporary file paths into a /bin/sh -c shell command string without any

How urgent is CVE-2026-35582?

Priority 50/100. High severity; Public exploit reference

Related CVEs

CVE-2026-35580 CRITICAL 9.1 UPGRADE Emissary is a P2P based data-driven workflow engine
CVE-2026-35581 HIGH 7.2 UPGRADE Emissary is a P2P based data-driven workflow engine
CVE-2026-35583 MEDIUM 5.3 UPGRADE Emissary is a P2P based data-driven workflow engine
CVE-2026-35571 MEDIUM 4.8 UPGRADE Emissary is a P2P based data-driven workflow engine

References

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