CVE-2026-107242 · Infrastructure
NO FIX YET
The Node.js web service on Versa VOS (formerly FlexVNF), used for URL-based zero touch provisioning, creates session IDs with UUIDv1, which are derived from time and MAC address and can be predicted. An attacker who predicts a user's session ID could hijack that session.
first public Nov 10, 2026 · 1 source
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Only VOS appliances (previously Versa FlexVNF) that still run the Node.js web service used for URL-based zero touch provisioning. Per the description, the flaw is not exploitable where that service has been disabled, and Versa's hardening guide recommends disabling it after initial provisioning.
Not affected if provisioning-complete, service-disabled
Who cares network-appliance, versa-flexvnf, versa-vos
Unknown from the sources.
The Node.js web service on VOS (previously Versa FlexVNF) is used for URL-based Zero Touch Provisioning (ZTP) of the VOS appliance and is not required after provisioning is complete. This service generates session identifiers using UUID version 1 (UUIDv1), which is derived from the system’s date and time and its MAC address. As a result, successive identifiers differ only slightly and can be predicted. An attacker who can predict a user’s session ID could hijack that user’s session.
Versa’s security hardening guide for Hubs, Branches, and Controllers recommends disabling the Node.js web service after the initial provisioning of the VOS device. This vulnerability is not exploitable on VOS devices where the Node.js web service has been disabled.
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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