CVE-2026-54442: NationalSecurityAgency emissary · Server-Side Request Forgery
Affects NationalSecurityAgency emissarySource CVE Database V5
Not known to be exploited · CVSS 4.8 Medium : upgrade to 8.51.0 when convenient.
Data as of 5 Nov 2026, 20:33 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 4.8 |
|---|
- Patch
- Available – fixed in 8.51.0
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 5 Nov 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 5 Nov 2026.
What to do
Upgrade NationalSecurityAgency emissary to 8.51.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| NationalSecurityAgencyemissary | Affected
| Fixed in
|
Description
Emissary is a P2P based data-driven workflow engine. Prior to 8.51.0, the VALID_LINK validation in src/main/java/emissary/server/mvc/NavAction.java accepts protocol-relative URLs when processing configured navigation links. Browser URL normalization can interpret these accepted strings as external origins. The authoritative advisory attributes open redirect, server-side request forgery, and cloud metadata access to this bypass, but it identifies neither the server-side dereference path nor how navigation-link processing reaches that path. This issue is fixed in version 8.51.0.