What is CVE-2026-7491?

CVE-2026-7491 is a high-severity vulnerability in Zyosoft School App, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-05-02.

How severe is CVE-2026-7491?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Zyosoft School App

CVE-2026-7491

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.000 (15.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Zyosoft School App — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

twcert@cert.org.tw (third-party-advisory)
twcert@cert.org.tw (third-party-advisory)

Frequently asked questions

What is CVE-2026-7491?: CVE-2026-7491 is a high-severity vulnerability in Zyosoft School App, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-05-02.
How severe is CVE-2026-7491?: High severity. CVSS v3 base score is 8.1 out of 10.