Government Fixes Major Security Flaw in Income Tax Portal, Prevents Data Leak

Last updated: 09 October 2025


Quick Summary
A significant security vulnerability on India's Income Tax e-filing portal has been successfully patched by the government, averting a potential large-scale leak of taxpayer data. The flaw, discovered by independent cybersecurity researchers, allowed unauthorised access to sensitive personal and financial details. The Indian Computer Emergency Response Team (CERT-In) coordinated with the Income Tax Department to implement a fix, which has been verified as effective.

In a crucial cybersecurity intervention, the Government of India has patched a serious vulnerability in the Income Tax e-filing portal, preventing what could have been a large-scale data leak of taxpayers' confidential information. Critical Vulnerability Found in Tax Portal Two independent cyberse
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FAQ :

An IDOR (Insecure Direct Object Reference) vulnerability was discovered, which allowed logged-in users to access another taxpayer's sensitive information by altering network request parameters.

The data potentially exposed included full name, address, email, phone number, date of birth, Aadhaar number, and bank account details for both individuals and registered entities.

The flaw was discovered by two independent cybersecurity researchers, Akshay C.S. and Viral.

The researchers responsibly reported the vulnerability to CERT-In, which then coordinated with the Income Tax Department to investigate and implement a fix.

Yes, CERT-In confirmed that the vulnerability has been successfully mitigated, and follow-up checks verified that unauthorized data access is no longer possible.

No, the government has not disclosed how long the flaw existed or whether any unauthorized access had occurred before it was patched.




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Finance news reporter covering taxation, GST, income tax, business compliance, and economy updates. I simplify complex financial topics into easy-to-understand articles for professionals, taxpayers, and business owners on leading finance and tax platforms.

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