SB2026110650 - Multiple vulnerabilities in emissary

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Main Vulnerability Database SB2026110650

SB2026110650 - Multiple vulnerabilities in emissary

Published: November 6, 2026

Security Bulletin ID SB2026110650
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-54442)

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows an unauthenticated remote attacker to make the Emissary server issue requests to internal services through server-side request forgery.

The vulnerability exists due to incomplete URL validation in Emissary's NavAction component when navigation links contain protocol-relative URLs or malformed HTTP scheme variants. An unauthenticated remote attacker can submit crafted navigation links that bypass validation and direct server requests to an attacker-selected destination.


Remediation

Install update from vendor's website.

References