Secuno
ENNL
Book demo

CVE-2026-41277

Flowiseai Flowise broken access control

8.8 HIGHPublic exploitEPSS 0.48%
  1. Published23 Apr 2026

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Mass Assignment vulnerability in the DocumentStore creation endpoint allows authenticated users to control the primary key (id) and internal state fields of DocumentStore entities. Because the service uses repository.save() with a client-supplied primary key, the POST create endpoint behaves as an implicit UPSERT operation. This enables overwriting existing DocumentStore objects. In multi-workspace or multi-tenant deployments, this can lead to cross-workspace object takeover and broken object-level authorization (IDOR), allowing an attacker to reassign or modify DocumentStore objects belonging to other workspaces. This vulnerability is fixed in 3.1.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Flowiseai Flowise< 3.1.0

Remediation

Fixed in
Flowiseai Flowise≥ 3.1.0

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-773669.9
obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian…
CVE-2026-1093438.1
SurrealDB before 3.3.0 allows cross-tenant access because the SurrealQL USE statement…
CVE-2026-1093348.1
SurrealDB before 3.3.0 does not check the caller-selected namespace or database against…
CVE-2026-1091868.8
jshERP through 3.6 contains a mass assignment vulnerability in the UserController…
CVE-2026-1054118.1
An Authorization Bypass Through User-Controlled Key vulnerability affecting Tuleap…
CVE-2026-1088538.1
UnicomAI Wanwu before 0.6.3 contains an insecure direct object reference vulnerability…

Frequently asked

Is CVE-2026-41277 being actively exploited?

CVE-2026-41277 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.48%.

How severe is CVE-2026-41277?

CVE-2026-41277 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.48% probability of exploitation.

Which products are affected by CVE-2026-41277?

Affected products include Flowiseai Flowise.

How do I fix CVE-2026-41277?

Upgrade affected software to a fixed version, for example Flowiseai Flowise 3.1.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-41277 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.