Unauthenticated exfiltration of MNESTIX_BACKEND_API_KEY in Mnestix Browser 1.6-2.3
CVE-2026-89292 Published on November 3, 2026
Unauthenticated SSRF with MNESTIX_BACKEND_API_KEY disclosure in Eclipse Mnestix Browser server actions for configured Infrastructures
In Eclipse Mnestix Browser versions 1.6.0 up until but excluding 2.3.0 it was possible for an unauthenticated attacker to exfiltrate the MNESTIX_BACKEND_API_KEY for all configured Infrastructures.
Vulnerability Analysis
CVE-2026-89292 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Types
What is a SSRF Vulnerability?
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.
CVE-2026-89292 has been classified to as a SSRF vulnerability or weakness.
Insufficiently Protected Credentials
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
Affected Versions
Eclipse Foundation Eclipse Mnestix:- Version 1.6.0 and below 2.3.0 is affected.