How severe is CVE-2025-71327?

CVE-2025-71327 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-2025-71327 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-71327?

CVE-2025-71327 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-71327?

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-2025-71327 have an EU (EUVD) identifier?

Yes. CVE-2025-71327 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210337.

When was CVE-2025-71327 published?

CVE-2025-71327 was published on 2026-06-25 and last updated on 2026-09-30.

CVE-2025-71327

CVE-2025-71327 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 9.3
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-210337
Weakness: CWE-306
Affected product: Flowiseai Flowise
Published: 2026-06-25
Last modified: 2026-09-30

Description

Flowise contains an authentication bypass vulnerability in the unprotected /api/v1/account/register endpoint that allows unauthenticated attackers to create user accounts. Remote attackers can exploit this endpoint to register arbitrary accounts and authenticate to the system, gaining full API access without credentials.

Frequently asked questions

What is CVE-2025-71327?: Flowise contains an authentication bypass vulnerability in the unprotected /api/v1/account/register endpoint that allows unauthenticated attackers to create user accounts. Remote attackers can exploit this endpoint to register arbitrary accounts and authenticate to the system, gaining full API access without credentials.
How severe is CVE-2025-71327?: CVE-2025-71327 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-2025-71327 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-71327?: CVE-2025-71327 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-71327?: 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-2025-71327 have an EU (EUVD) identifier?: Yes. CVE-2025-71327 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210337.
When was CVE-2025-71327 published?: CVE-2025-71327 was published on 2026-06-25 and last updated on 2026-09-30.

References

Affected products (1)

cpe:2.3:a:flowiseai:flowise:3.0.1:*:*:*:*:*:*:*

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