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TI-2021-17790 Aliases CVE-2021-40868GHSA-66gc-ch9m-r42v

In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.

Priority LOW 39CWE-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

In Cloudron 6.2, the returnTo parameter on the login page is vulnerable to Reflected XSS.

Why it matters now

EPSS 0.09071 95th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
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:cloudron:cloudron:6.2:*:*:*:*:*:*:*6.2VulnerableCloudron
  • cpe:2.3:a:cloudron:cloudron:6.2:*:*:*:*:*:*:* Versions 6.2 Vulnerable ·Cloudron

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40868
  2. 2026-10-03 Alias added: GHSA-66gc-ch9m-r42v

References

Exploit 2

Other 1

Sources

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