How severe is CVE-2026-46440?

CVE-2026-46440 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-46440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-46440?

CVE-2026-46440 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-46440?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-46440 have an EU (EUVD) identifier?

Yes. CVE-2026-46440 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35107.

When was CVE-2026-46440 published?

CVE-2026-46440 was published on 2026-06-08 and last updated on 2026-06-17.

CVE-2026-46440

CVE-2026-46440 is a critical-severity vulnerability in Flowiseai Flowise with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-522.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-35107
Weakness: CWE-522
Affected product: Flowiseai Flowise
Published: 2026-06-08
Last modified: 2026-06-17

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, the checkBasicAuth endpoint validates credentials in plaintext without rate limiting and with direct comparison. This issue has been patched in version 3.1.2.

Frequently asked questions

What is CVE-2026-46440?: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, the checkBasicAuth endpoint validates credentials in plaintext without rate limiting and with direct comparison. This issue has been patched in version 3.1.2.
How severe is CVE-2026-46440?: CVE-2026-46440 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-46440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-46440?: CVE-2026-46440 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-46440?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-46440 have an EU (EUVD) identifier?: Yes. CVE-2026-46440 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35107.
When was CVE-2026-46440 published?: CVE-2026-46440 was published on 2026-06-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

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