CVE-2026-35581: Emissary is a P2P based data-driven workflow engine

Q: How do I fix CVE-2026-35581?

emissary: upgrade to newer than 8.38.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-35581 being exploited?

CVE-2026-35581 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-2026-35581 affect?

CVE-2026-35581 affects emissary. Severity is high (CVSS 7.2). Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, the Executrix utility class constructed shell commands by concatenating configuration-derived values — including the PLACE_NAME parameter — with insufficient sanitization

Q: How urgent is CVE-2026-35581?

Priority 42/100. High severity; Public exploit reference

This month

HIGH 7.2UPGRADE

CVE-2026-35581 is a high-severity flaw (CVSS 7.2) 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. Prior to 8.39.0, the Executrix utility class constructed shell commands by concatenating configuration-derived values — including the PLACE_NAME parameter — with insufficient sanitization. Only spaces were replaced with underscores, allowing shell metacharacters (;, |, $, `, (, ), etc.) to pass through into /bin/sh -c command execution. This vulnerability is fixed in 8.39.0.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-04-07
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

2026-04-07 17:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

nsa emissary UPGRADE

Affected: <= 8.38.0

Fixed in: newer than 8.38.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 8.38.0 (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-2026-35581?

emissary: upgrade to newer than 8.38.0. Exact commands for each OS are on this page.

Is CVE-2026-35581 being exploited?

CVE-2026-35581 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-2026-35581 affect?

CVE-2026-35581 affects emissary. Severity is high (CVSS 7.2). Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, the Executrix utility class constructed shell commands by concatenating configuration-derived values — including the PLACE_NAME parameter — with insufficient sanitization

How urgent is CVE-2026-35581?

Priority 42/100. High severity; Public exploit reference

Related CVEs

CVE-2026-35582 HIGH 8.8 UPGRADE Emissary is a P2P based data-driven workflow engine
CVE-2026-35580 CRITICAL 9.1 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

← Back to latest CVEs