How severe is CVE-2025-71334?

CVE-2025-71334 has a CVSS 3.x base score of 9.8, 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 high.

Is CVE-2025-71334 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-71334?

CVE-2025-71334 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-71334?

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-2025-71334 have an EU (EUVD) identifier?

Yes. CVE-2025-71334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210340.

When was CVE-2025-71334 published?

CVE-2025-71334 was published on 2026-06-25 and last updated on 2026-07-01.

CVE-2025-71334

CVE-2025-71334 is a critical-severity vulnerability in Flowiseai Flowise with a CVSS 3.x base score of 9.8. 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-73.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-210340
Weakness: CWE-73
Affected product: Flowiseai Flowise
Published: 2026-06-25
Last modified: 2026-07-01

Description

Flowise before 3.0.6 (affected versions 2.2.8 and earlier) contains an arbitrary file access vulnerability due to missing validation that the chatflowId and chatId parameters are UUIDs or numbers in file handling operations. By supplying a path-traversal value (e.g., '../../../../../tmp') as the chatflow id, an unauthenticated attacker can use the /api/v1/chatflows endpoint (via addBase64FilesToStorage) to write arbitrary files, and the /api/v1/get-upload-file and /api/v1/openai-assistants-file/download endpoints (via streamStorageFile) to read arbitrary files. Arbitrary file write may lead to remote code execution.

Frequently asked questions

What is CVE-2025-71334?: Flowise before 3.0.6 (affected versions 2.2.8 and earlier) contains an arbitrary file access vulnerability due to missing validation that the chatflowId and chatId parameters are UUIDs or numbers in file handling operations. By supplying a path-traversal value (e.g., '../../../../../tmp') as the chatflow id, an unauthenticated attacker can use the /api/v1/chatflows endpoint (via addBase64FilesToStorage) to write arbitrary files, and the /api/v1/get-upload-file and /api/v1/openai-assistants-file/download endpoints (via streamStorageFile) to read arbitrary files. Arbitrary file write may lead to remote code execution.
How severe is CVE-2025-71334?: CVE-2025-71334 has a CVSS 3.x base score of 9.8, 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 high.
Is CVE-2025-71334 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-71334?: CVE-2025-71334 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-71334?: 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-2025-71334 have an EU (EUVD) identifier?: Yes. CVE-2025-71334 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-210340.
When was CVE-2025-71334 published?: CVE-2025-71334 was published on 2026-06-25 and last updated on 2026-07-01.

References

Affected products (1)

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

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