be
@ni5arga
→ 19 years old, from West Bengal, studied in Delhi for a few years
→ just finished his own Class 12 exams in 2026
→ calls himself a hobbyist cybersecurity researcher
→ says he is an engineer, not a hacker
→ built an OSINT engine, a stock-tracking TUI, a pastebin in Rust
→ once found bugs in FOSS United and disclosed them quietly
→ just another CBSE student watching his own board roll out a new digital marking system
then he opened the portal
→ CBSE moves Class 12 evaluation to On-Screen Marking, 1.8 million students affected
→ Nisarga sees the portal link is fully public, gets curious
→ opens DevTools, downloads the Angular JavaScript bundle
→ first vulnerability found in 30 minutes
→ a literal master password sitting in plain text inside the frontend code
→ enter it, the OTP field auto-fills, the entire login flow gets bypassed
→ OTP validation happens in the user's browser, not on the server
→ no route guards, every internal page reachable by editing browser storage
→ password reset API never checks the old password
→ systemic IDOR across the entire API, change one value in sessionStorage, become any examiner
→ outcome: take over any teacher account, view answer sheets, edit marks
25 February 2026. He reports everything to CERT-In the same day.
→ CERT-In asks for a screen recording, he sends a full walkthrough
→ acknowledgement comes back as a boilerplate reply
→ reference number assigned: CERTIn-16590126
→ he follows up multiple times. no response.
→ three months pass. portal still live. Class 12 results released. vulnerabilities still there.
→ 22 May: publishes the blog post and a thread on X
→ Deedy Das, Satish Acharya, Internet Freedom Foundation amplify it
→ the post goes viral
→ CBSE issues a clarification: that was just a test portal, no breach
→ the URL CBSE cited in their own tweet was not even a registered domain
→ a friend buys the domain and points it at Nisarga's blog
→ CBSE quietly deletes the tweet
then it gets worse
→ 25 May: finds an SQL injection vulnerability on the live production portal
→ reports to CERT-In, gets a one-line thank you
→ gains admin access to the live
cbse.onmark.co.in server
→ portal stays up for four more hours
→ he uploads anime videos and memes, links them publicly from CBSE servers
→ plays a viral Japanese song on a CBSE page, makes the news for it
→ CBSE finally takes the whole portal down
then he reads the database
→ master table accessed: 10 GB, 9.3 million records
→ examiner names, addresses, school names, bank account details
→ passwords stored in plain text
→ login tokens anyone can paste into a browser to log in as that user
→ 31 May: finds a second live CBSE production portal, 45,074 records of failed payments
→ emails, phone numbers, payment IDs, order IDs, all readable
→ 31 May, the bigger one: an AWS S3 bucket is misconfigured
→ ListObjectsV2 works without authentication, the bucket root is listable
→ samples pulled from 18 lakh scanned 2026 answer sheets, every subject
→ multiple institutions sharing the same bucket
→ also notices something strange in the scans: bedsheets visible in the background of answer sheets CBSE paid for proper scanners to handle
CBSE responds
→ posts an AI-generated image saying the system is robust and secure
→ three days later admits some vulnerabilities existed and have been contained
→ refuses to name the cybersecurity firm doing the audit
→ claims they tried contacting him. he says they have not.
→ Internet Freedom Foundation writes to the Ministry of Education and CERT-In
→ asks for an investigation into CBSE, a review of the contract with vendor Coempt EduTeck, a full audit
→ he points out he could have sold this data and made a lot of money
→ he did not. he is a CBSE student too.
→ his own analogy: the door wasn't just unlocked. the key was lying on the ground in front of everyone.
a 19-year-old with a anima pff broke a national exam evaluation system in 30 minutes with browser developer tools and the government is still pretending it was a test environment
My god ...please watch this. I swear this country is being held together by a chewing gum.
@ni5arga well done on exposing these vulnerabilities and even answering the media so confidently. I know this is not easy for you and took a lot of courage 🙌