CSV Injection Bug in Dify AI Platform Fixed With Single Line of Code

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A security researcher discovered a CSV injection vulnerability in Dify, an open-source AI platform, during a routine audit. The flaw stemmed from improper quote escaping when generating spreadsheet data, allowing malicious cell values to break out of CSV formatting. An attacker could potentially exploit this to leak or manipulate spreadsheet data exported by the platform. The fix required just one line of code, replacing unsafe string concatenation with Python's built-in csv module, which handles quote escaping correctly. The researcher shared the finding as part of an ongoing bug bounty series documenting real-world vulnerabilities.

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ProgrammingDEV Community ·

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