Mathspace, an online mathematics program for students, has disclosed a data breach that impacts over 1 million individuals.
The incident, it says, was discovered last week, roughly three weeks after hackers compromised its self-hosted Metabase instance using a known vulnerability.
The security defect, tracked as CVE-2026-72898 (CVSS score of 10/10) and described as an SQL injection issue, was patched on August 6, after it had been exploited in the wild as a zero-day.
Shortly after the patches were released, the notorious extortion group ShinyHunters claimed responsibility for hacking Metabase.
Mathspace failed to escalate Metabase’s critical advisory to prioritize patching and upgraded its instance on August 29, more than two weeks after hackers hit it.
“Our investigation identified unauthorised access dating back to 10 August 2026, Australian Eastern Standard Time. We confirmed that information was downloaded from our Australian reporting database on 27 August,” Mathspace says in an incident notice.
Furthermore, Mathspace did not complete the compromise checks Metabase had recommended, and did not identify the intrusion upon applying the update.
“We are investigating why the initial advisory was not escalated and why those checks were not completed sooner. We are changing both processes as part of our incident response,” the online platform says.
Mathspace has taken its Metabase instance offline, revoked API keys, disabled the database access accounts, changed passwords, and exported the logs for investigation.
The data breach impacts 1,079,819 students, teachers, staff, and parents/guardians from Australia and New Zealand.
Hackers downloaded names, user IDs, usernames, email addresses, email verification status, time zone, country, date joined, and last login and active dates.
“No academic records, learning activities, results, assessment records, passwords (hashes), authentication tokens, SSO credentials, or API credentials were exposed. The exposed data did not include records linking user accounts to their schools,” Mathspace says.
The platform warns that the threat actors may use the stolen information to mount phishing attacks, urging the potentially affected individuals to treat with extreme caution any unsolicited communication containing accurate references to the incident.
Mathspace reported the incident to the relevant authorities in Australia and, over the weekend, started notifying the potentially affected individuals.
Related: Manchester Airports Group Data on 8.8 Million People Leaked After Ransom Refusal
Related: 153 Million Driver License Images Offered on Dark Web