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TI-2021-15771 Aliases CVE-2021-38087GHSA-wjwv-pgg8-mj5p

Reflected cross-site scripting (XSS) was possible on the login page in Acronis Cyber Protect 15 prior to build 27009.

Priority LOW 28CWE-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

Reflected cross-site scripting (XSS) was possible on the login page in Acronis Cyber Protect 15 prior to build 27009.

Why it matters now

EPSS 0.00581 47th 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 · 3

CPEVersionsRoleVendor
cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:*before 15VulnerableAcronis
cpe:2.3:a:acronis:cyber_protect:15:-:*:*:*:*:*:*15VulnerableAcronis
cpe:2.3:a:acronis:cyber_protect:15:update1:*:*:*:*:*:*15 update1VulnerableAcronis
  • cpe:2.3:a:acronis:cyber_protect:*:*:*:*:*:*:*:* Versions before 15 Vulnerable ·Acronis
  • cpe:2.3:a:acronis:cyber_protect:15:-:*:*:*:*:*:* Versions 15 Vulnerable ·Acronis
  • cpe:2.3:a:acronis:cyber_protect:15:update1:*:*:*:*:*:* Versions 15 update1 Vulnerable ·Acronis

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-38087
  2. 2026-10-03 Alias added: GHSA-wjwv-pgg8-mj5p

References

Advisory 1

  • TI-2022-03146 Improper privilege management in Acronis Cyber Protect 15 CVSS 3.1HIGH 8.8
  • TI-2025-21714 Weak authentication in Acronis Cyber Protect 16 CVSS 3.0CRITICAL 10.0
  • TI-2025-21713 Weak authentication in Acronis Cyber Protect 16 CVSS 3.0CRITICAL 10.0
  • TI-2025-21717 Missing authorization in Acronis Cyber Protect 16 CVSS 3.0CRITICAL 10.0
  • TI-2023-23738 Authorization bypass in Acronis Cyber Protect 15 CVSS 3.1CRITICAL 9.1
  • TI-2026-22921 Weak authentication in Acronis Cyber Protect 17 CVSS 3.1CRITICAL 9.8
See all 85 →

Sources

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