CVE-2026-48520 is a medium-severity security vulnerability in langflow (pip), affecting versions < 1.10.0. It is fixed in 1.10.0.
Summary 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 Details Shareable Playground feature works by enabling the execution of workflows by unauthenticated users, by accessing a link. Specifically, it enables the route /api/v1/buildpublictmp to execute any public flow, given a public flow ID. This request contains a files field that can contain a list of files. The files get read in LCModelComponent.getchatresult in a call to tolcmessage. A detailed stacktrace: This triggers Langflow to feed the file into the LLM as an Image. Reading the files back depends on the specific LLM configuration. PoC Reproduction: Create a new flow and add a Chat Input node to it Share the flow ("Shareable Playground") Access the public link with the browser developers tools open and execute the flow. Find the /api/v1/buildpublic_tmp route and copy as cURL Edit the files JSON field to point to any file. Impact Potential file read (local or S3) if shareable playground feature is used. Ori Lahav Security Researcher @ Rubrik Inc.
CVE-2026-48520 has a CVSS score of 6.1 (Medium). The vector is network-reachable, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.
A fixed version is available (1.10.0). Upgrading removes the vulnerable code path.
pip
langflow (< 1.10.0)langflow → 1.10.0 (pip)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter instead of chasing every advisory.
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Upgrade langflow to 1.10.0 or later to resolve this vulnerability.
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
CVE-2026-48520 is a medium-severity security vulnerability in langflow (pip), affecting versions < 1.10.0. It is fixed in 1.10.0.
CVE-2026-48520 has a CVSS score of 6.1 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
langflow (pip) versions < 1.10.0 is affected.
Yes. CVE-2026-48520 is fixed in 1.10.0. Upgrade to this version or later.
Whether CVE-2026-48520 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
Upgrade langflow to 1.10.0 or later.