Is CVE-2026-42863 actively exploited?

No active exploitation of CVE-2026-42863 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42863 be exploited remotely?

Yes. CVE-2026-42863 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42863?

CVE-2026-42863 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2026-42863

CWE-284Published: June 8, 2026· Updated: Jun 11, 2026

8.1

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.5th

Official Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, a mass assignment vulnerability exists in the chatflow update endpoint of FlowiseAI. The endpoint allows clients to modify server-controlled properties such as deployed, isPublic, workspaceId, createdDate, and updatedDate when updating a chatflow object. Due to missing server-side validation and authorization checks, an authenticated user can manipulate internal attributes of a chatflow and reassign it to another workspace. This allows cross-workspace resource reassignment and unauthorized modification of deployment and visibility settings. This issue has been patched in version 3.1.2.

NVD Source

Technical Analysis

CVE-2026-42863 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 8.1.