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TI-2026-01517 Aliases CVE-2026-1842GHSA-2x2g-fcpp-7fr9

HyperCloud Improper Refresh Token Validation and Access Token Invalidation Allows Long-Term Unauthorized Access

Priority LOW 27CWE-613Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-613.

Summary

HyperCloud versions 2.3.5 through 2.6.8 improperly allowed refresh tokens to be used directly for resource access and failed to invalidate previously issued access tokens when a refresh token was used. Because refresh tokens have a significantly longer lifetime (default one year), an authenticated client could use a refresh token in place of an access token to maintain long-term access without token rotation. Additionally, old access tokens remained valid after refresh, enabling concurrent or extended use beyond intended session boundaries. This vulnerability could allow prolonged unauthorized access if a token is disclosed.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0024 15th percentileScored 2026-11-07
Fix Fixed HyperCloud (SoftIron): 2.6.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SoftIronHyperCloud2.3.5 to before 2.6.92.6.9Patch availableCNA
  • HyperCloud VendorSoftIron Affected 2.3.5 to before 2.6.9 Fixed in 2.6.9 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:softiron:hypercloud:*:*:*:*:*:*:*:*——SoftIron
  • cpe:2.3:a:softiron:hypercloud:*:*:*:*:*:*:*:* Versions — — ·SoftIron

Remediation

  • Fix · CNA HyperCloud (SoftIron) Fixed in 2.6.9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-1842
  2. 2026-10-03 Alias added: GHSA-2x2g-fcpp-7fr9

References

Other 1

  • TI-2026-83458 OS command injection in SoftIron HyperCloud Orchestrator via VM template fields CVSS 3.1HIGH 7.4
  • TI-2023-24129 Media caddy removal and reinsertion without reboot may cause data loss CVSS 3.1HIGH 7.0
  • TI-2024-12106 Authenticated, non-admin users can create storage pools via the sifi API CVSS 4.0MEDIUM 4.8
  • TI-2023-24128 HyperCloud: "admin" and "serveradmin" users can be deleted CVSS 3.1MEDIUM 4.4
  • TI-2023-24130 When compute hosts are disabled and reenabled, they immediately transition to "ON", not "INIT" CVSS 3.1LOW 3.3
  • TI-2025-09750 Improper SSH Key Handling in Internal Debug Builds May Grant Cluster-Level Access to Non-Administrative Users CVSS 4.0LOW 1.8

Sources

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