CVE-2026-35581: NationalSecurityAgency emissary · OS Command Injection
Affects NationalSecurityAgency emissarySource CVE Database V5
Not known to be exploited · CVSS 7.2 High : upgrade to 8.39.0 soon.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.39.0
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 7 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade emissary and nationalsecurityagency/emissary to 8.39.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| NationalSecurityAgencyemissary | Affected
| Fixed in
|
GitHubnationalsecurityagency/emissarypkg:github/nationalsecurityagency/emissaryOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Emissary to version 8.39.0 or later where this vulnerability is fixed. Until upgraded, avoid using untrusted input in the PLACE_NAME parameter or any configuration values that influence shell command construction.
Description
CVE-2026-35581 is an OS command injection vulnerability in the NationalSecurityAgency's Emissary product prior to version 8.39.0. The Executrix utility class improperly sanitizes the PLACE_NAME parameter by only replacing spaces with underscores, allowing shell metacharacters to be injected into commands executed via /bin/sh -c. This flaw enables an attacker with high privileges to execute arbitrary commands with high impact on confidentiality, integrity, and availability. The vulnerability is fixed in version 8.39.0.