CVE-2026-54442
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
45/100
Published: 2026-11-05
Modified: 2026-11-12
First seen: 2026-11-05
Status: active
Attack Surface
Network
Low Complexity
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
High
UI:
Required
S:
Changed
C:
Low
I:
Low
A:
None
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.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| NationalSecurityAgency | emissary | < 8.51.0 |
| NationalSecurityAgency | emissary | < 8.51.0 |
References & Advisories (3)
x_refsource_MISC
x_refsource_MISC
x_refsource_CONFIRM