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CVE-2025-26319 is a pre-authentication arbitrary file-write vulnerability in Flowise 2.2.6. The attachment/knowledge-upload functionality accepts attacker-controlled chatflow and chat identifiers and uses them to construct local storage paths without adequate format validation or traversal prevention. When Flowise uses local storage, an unauthenticated attacker can submit a crafted upload request that escapes the intended attachment directory and writes or overwrites files at attacker-chosen locations accessible to the Flowise process.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a Python exploit script (CVE-2025-26319_exp.py) and a README.md for CVE-2025-26319, a pre-auth arbitrary file upload vulnerability in Flowise. The exploit leverages the /api/v1/attachments endpoint, which is accessible without authentication, and abuses the 'chatId' parameter for path traversal, allowing files to be uploaded to arbitrary locations on the server. The script can upload any file, overwrite sensitive configuration files (such as /root/.flowise/api.json), or generate and upload webshells (PHP or Node.js) for remote code execution. The exploit is operational, providing both file upload and webshell deployment capabilities. The README provides usage examples and explains the attack mechanism. The main entry point is the Python script, which is well-structured and automates the exploitation process.
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13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Flowise nodevm sandbox-escape vulnerability enabled through externally permitted modules; the initial module-restriction remediation was bypassed.
A Flowise-related vulnerability that the content says is being actively exploited and is included in VulnCheck's Known Exploited Vulnerabilities catalog, but no technical details are provided.
An arbitrary file upload vulnerability in Flowise that was flagged for active exploitation by VulnCheck's Canary network.
A previously disclosed Flowise vulnerability referenced as one of the earlier Flowise flaws actively exploited in the wild.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.