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TI-2021-13813 Aliases CVE-2021-34821GHSA-c893-g5w3-m4cj

Cross Site Scripting (XSS) vulnerability exists in AAT Novus Management System through…

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

Cross Site Scripting (XSS) vulnerability exists in AAT Novus Management System through 1.51.2. The WebUI has wrong HTTP 404 error handling implemented. A remote, unauthenticated attacker may be able to exploit the issue by sending malicious HTTP requests to non-existing URIs. The value of the URL path filename is copied into the HTML document as plain text tags.

Why it matters now

EPSS 0.00816 57th 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:aat:novus_management_system:*:*:*:*:*:*:*:*up to 1.51.2VulnerableAat
  • cpe:2.3:a:aat:novus_management_system:*:*:*:*:*:*:*:* Versions up to 1.51.2 Vulnerable ·Aat

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-34821
  2. 2026-10-03 Alias added: GHSA-c893-g5w3-m4cj

References

Advisory 1

  • TI-2021-13812 Web Path Directory Traversal in the Novus HTTP Server. CVSS 3.1HIGH 7.5

Sources

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