How severe is CVE-2026-6589?

CVE-2026-6589 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-6589 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6589?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-6589 have an EU (EUVD) identifier?

Yes. CVE-2026-6589 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23731.

When was CVE-2026-6589 published?

CVE-2026-6589 was published on 2026-04-20 and last updated on 2026-06-17.

CVE-2026-6589

CVE-2026-6589 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 5.0
CVSS v4: 2.1
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-23731
Weakness: CWE-352
Published: 2026-04-20
Last modified: 2026-06-17

Description

A security vulnerability has been detected in ComfyUI up to 0.13.0. This affects the function create_origin_only_middleware of the file server.py. The manipulation leads to cross-site request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-6589?: A security vulnerability has been detected in ComfyUI up to 0.13.0. This affects the function create_origin_only_middleware of the file server.py. The manipulation leads to cross-site request forgery. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-6589?: CVE-2026-6589 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-6589 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-6589?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-6589 have an EU (EUVD) identifier?: Yes. CVE-2026-6589 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-23731.
When was CVE-2026-6589 published?: CVE-2026-6589 was published on 2026-04-20 and last updated on 2026-06-17.

References

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