How severe is CVE-2026-48520?

CVE-2026-48520 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-48520 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-48520?

CVE-2026-48520 affects Langflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-48520?

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

Does CVE-2026-48520 have an EU (EUVD) identifier?

Yes. CVE-2026-48520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38520.

When was CVE-2026-48520 published?

CVE-2026-48520 was published on 2026-06-23 and last updated on 2026-06-26.

CVE-2026-48520

CVE-2026-48520 is a medium-severity vulnerability in Langflow with a CVSS 3.x base score of 6.1. 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-73.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38520
Weakness: CWE-73
Affected product: Langflow
Published: 2026-06-23
Last modified: 2026-06-26

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.10.0, the "Shareable Playground" (or "Public Flows" in code) contains a potential arbitrary file-read vulnerability, depending on the exact flow configuration used. By making a flow public, public execution of the flow is allowed. The execution request can contain a list of files that gets read by Langflow and fed into the LLM. The files path can be any path supported by the storage - it can be either a local file or S3 path if supported by the local configuration This vulnerability is fixed in 1.10.0.

Frequently asked questions

What is CVE-2026-48520?: Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.10.0, the "Shareable Playground" (or "Public Flows" in code) contains a potential arbitrary file-read vulnerability, depending on the exact flow configuration used. By making a flow public, public execution of the flow is allowed. The execution request can contain a list of files that gets read by Langflow and fed into the LLM. The files path can be any path supported by the storage - it can be either a local file or S3 path if supported by the local configuration This vulnerability is fixed in 1.10.0.
How severe is CVE-2026-48520?: CVE-2026-48520 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-48520 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-48520?: CVE-2026-48520 affects Langflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-48520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-48520 have an EU (EUVD) identifier?: Yes. CVE-2026-48520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38520.
When was CVE-2026-48520 published?: CVE-2026-48520 was published on 2026-06-23 and last updated on 2026-06-26.

References

https://github.com/langflow-ai/langflow/security/advisories/GHSA-rcjh-r59h-gq37

Affected products (1)

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

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