Read the docs
TI-2021-08846 Aliases CVE-2021-27340GHSA-6ph7-3cx8-q7xh

OpenSIS Community Edition version <= 7.6 is affected by a reflected XSS vulnerability in…

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

OpenSIS Community Edition version <= 7.6 is affected by a reflected XSS vulnerability in EmailCheck.php via the "opt" parameter.

Why it matters now

EPSS 0.01099 65th 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:os4ed:opensis:*:*:*:*:community:*:*:*up to 7.6VulnerableOS4ED
  • cpe:2.3:a:os4ed:opensis:*:*:*:*:community:*:*:* Versions up to 7.6 Vulnerable ·OS4ED

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27340
  2. 2026-10-03 Alias added: GHSA-6ph7-3cx8-q7xh

References

Patch 1

Advisory 2

  • TI-2024-34282 SQL injection vulnerability exists in OS4ED openSIS-Classic Version 9.1, specifically in… CVSS 3.1CRITICAL 9.8
  • TI-2020-10493 openSIS through 7.4 allows SQL Injection. CVSS 3.1CRITICAL 9.8
  • TI-2025-16780 OS4ED openSIS v7.0 through v9.1 contains a SQL injection vulnerability via the stu_id… CVSS 3.1HIGH 8.8
  • TI-2025-16779 An issue in OS4ED openSIS v8.0 through v9.1 allows attackers to execute a directory… CVSS 3.1HIGH 8.8
  • TI-2024-31069 OS4ED openSIS-Classic v9.1 was discovered to contain a SQL injection vulnerability via a crafted payload. CVSS 3.1HIGH 8.8
  • TI-2024-23488 SQL injection vulnerabilities were discovered in Ajax.php, ForWindow.php, ForExport.php… CVSS 3.1HIGH 8.8
See all 80 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences