How severe is CVE-2025-55526?

CVE-2025-55526 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-2025-55526 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-2025-55526?

CVE-2025-55526 primarily affects N8n Fastapi. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-55526?

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-2025-55526 have an EU (EUVD) identifier?

Yes. CVE-2025-55526 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25785.

When was CVE-2025-55526 published?

CVE-2025-55526 was published on 2025-08-26 and last updated on 2026-06-17.

CVE-2025-55526

CVE-2025-55526 is a critical-severity vulnerability in N8n Fastapi 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25785
Weakness: CWE-22
Affected product: N8n Fastapi
Published: 2025-08-26
Last modified: 2026-06-17

Description

n8n-workflows Main Commit ee25413 allows attackers to execute a directory traversal via the download_workflow function within api_server.py

Frequently asked questions

What is CVE-2025-55526?: n8n-workflows Main Commit ee25413 allows attackers to execute a directory traversal via the download_workflow function within api_server.py
How severe is CVE-2025-55526?: CVE-2025-55526 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-2025-55526 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-2025-55526?: CVE-2025-55526 primarily affects N8n Fastapi. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-55526?: 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-2025-55526 have an EU (EUVD) identifier?: Yes. CVE-2025-55526 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25785.
When was CVE-2025-55526 published?: CVE-2025-55526 was published on 2025-08-26 and last updated on 2026-06-17.

References

https://github.com/Zie619/n8n-workflows/issues/48

Affected products (3)

cpe:2.3:a:n8n:fastapi:0.115.14:*:*:*:*:*:*:*
cpe:2.3:a:n8n:pydantic:2.11.7:*:*:*:*:*:*:*
cpe:2.3:a:n8n:uvicorn:0.35.0:*:*:*:*:*:*:*

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