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PatchSiren cyber security CVE debrief

CVE-2026-48520 langflow-ai CVE debrief

CVE-2026-48520 is a medium-severity vulnerability in Langflow's AI-powered agents and workflows. The 'Shareable Playground' feature, also known as 'Public Flows', allows public execution of flows, which can lead to arbitrary file reads. An attacker can exploit this by making a flow public and including a list of files to be read by Langflow and fed into the LLM. The vulnerability is fixed in version 1.10.0. Langflow users should update to the latest version to prevent potential exploitation. Additionally, defenders should review their Langflow configurations and ensure that only authorized flows are made public.

Vendor
langflow-ai
Product
langflow
CVSS
MEDIUM 6.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-23
Original CVE updated
2026-06-26
Advisory published
2026-06-23
Advisory updated
2026-06-26

Who should care

Langflow users, administrators, and security teams should be aware of this vulnerability. Those using Langflow for AI-powered agents and workflows should assess their exposure and take steps to mitigate the risk. This includes updating to version 1.10.0 or later and reviewing flow configurations to prevent unauthorized access.

Technical summary

CVE-2026-48520 is a vulnerability in Langflow's 'Shareable Playground' feature. Prior to version 1.10.0, making a flow public allows public execution, which can lead to arbitrary file reads. An attacker can exploit this by including a list of files to be read by Langflow and fed into the LLM. The vulnerability has a CVSS score of 6.1 and is classified as medium severity. The CVSS vector is CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N.

Defensive priority

Defenders should prioritize updating Langflow to version 1.10.0 or later. Reviewing flow configurations and ensuring only authorized flows are made public is also crucial.

Recommended defensive actions

  • Update Langflow to version 1.10.0 or later
  • Review flow configurations to prevent unauthorized access
  • Ensure only authorized flows are made public
  • Monitor Langflow usage for suspicious activity
  • Implement additional security measures to prevent exploitation

Evidence notes

The vulnerability is confirmed by the Langflow security advisory (GHSA-rcjh-r59h-gq37). The CVE record and NVD detail provide additional information on the vulnerability. The source item URL provides further context on the CVE record.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48520 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48520

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-48520 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48520

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.