Vulnerability · Published May 2, 2026 · Assigned by twcert
CVE-2026-7491Zyosoft｜School App - Insecure Direct Object Reference
High 8.1
In plain English
A high-severity authorization bypass via user-controlled key in School App from Zyosoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.3%top 82.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
School App developed by Zyosoft has an Insecure Direct Object Reference vulnerability, allowing authenticated remote attackers to modify a specific parameter to read and modify other users' data.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyosoft | School App | 0 – before 1.1.62 |
| Zyosoft | School App | 0 – before 2.7.2 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- https://www.twcert.org.tw/tw/cp-132-10896-e3240-1.html third-party-advisory
- https://www.twcert.org.tw/en/cp-139-10897-64257-2.html third-party-advisory