How severe is CVE-2026-33053?

CVE-2026-33053 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-33053 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33053?

CVE-2026-33053 affects Langflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33053?

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

Does CVE-2026-33053 have an EU (EUVD) identifier?

Yes. CVE-2026-33053 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13592.

When was CVE-2026-33053 published?

CVE-2026-33053 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-33053

CVE-2026-33053 is a high-severity vulnerability in Langflow with a CVSS 3.x base score of 8.8. 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-639.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 6.1
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13592
Weakness: CWE-639
Affected product: Langflow
Published: 2026-03-20
Last modified: 2026-06-17

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the delete_api_key_route() endpoint accepts an api_key_id path parameter and deletes it with only a generic authentication check (get_current_active_user dependency). However, the delete_api_key() CRUD function does NOT verify that the API key belongs to the current user before deletion.

Frequently asked questions

What is CVE-2026-33053?: Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the delete_api_key_route() endpoint accepts an api_key_id path parameter and deletes it with only a generic authentication check (get_current_active_user dependency). However, the delete_api_key() CRUD function does NOT verify that the API key belongs to the current user before deletion.
How severe is CVE-2026-33053?: CVE-2026-33053 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-33053 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33053?: CVE-2026-33053 affects Langflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33053?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33053 have an EU (EUVD) identifier?: Yes. CVE-2026-33053 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13592.
When was CVE-2026-33053 published?: CVE-2026-33053 was published on 2026-03-20 and last updated on 2026-06-17.

References

https://github.com/langflow-ai/langflow/security/advisories/GHSA-rf6x-r45m-xv3w

Affected products (1)

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

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