ShinHer Information Co., LTD. ShinHer StudyOnline System - Improper Authorization-2
Priority LOW 25CWE-285Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-285.
Summary
The “Study Edit” function of ShinHer StudyOnline System does not perform permission control. After logging in with user’s privilege, remote attackers can access and edit other users’ tutorial schedule by crafting URL parameters.
Why it matters now
EPSS 0.00641 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ShinHer Information Co., LTD. | ShinHer StudyOnline System | up to 2021 | — | No fix listed | CNA |
- ShinHer StudyOnline System VendorShinHer Information Co., LTD. Affected up to 2021 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:xinheinformation:xinhe_teaching_platform_system:v2021:*:*:*:*:*:*:* | v2021 | Vulnerable | ShinHer Information Co., LTD. |
- cpe:2.3:a:xinheinformation:xinhe_teaching_platform_system:v2021:*:*:*:*:*:*:* Versions v2021 Vulnerable ·ShinHer Information Co., LTD.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-42331
- 2026-10-03 Alias added: GHSA-wxc7-jc57-c2hc
- 2026-10-21 EPSS moved to the 50th–90th percentile
References
More ShinHer Information Co., LTD. Xinhe Teaching Platform System vulnerabilities
- TI-2021-18760 ShinHer Information Co., LTD. ShinHer StudyOnline System - Improper Authorization-1 CVSS 3.1HIGH 8.8
- TI-2021-18759 ShinHer Information Co., LTD. ShinHer StudyOnline System - Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2021-18762 ShinHer Information Co., LTD. ShinHer StudyOnline System - Improper Authorization-3 CVSS 3.1MEDIUM 4.3
Sources
- CVE-2021-42331 · CVE Program
- CVE-2021-42331 · NVD
- FIRST EPSS
- GHSA-wxc7-jc57-c2hc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences