CVE-2026-1842 (GCVE-0-2026-1842)

Vulnerability from cvelistv5 – Published: 2026-02-20 16:23 – Updated: 2026-02-20 18:54
VLAI
Title
HyperCloud Improper Refresh Token Validation and Access Token Invalidation Allows Long-Term Unauthorized Access
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.
Severity
6.2 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-20 18:53 UTC
CWE
  • CWE-613 - Insufficient Session Expiration
Assigner
SoftIron CNA under the mitre root
CNA scorecard – unranked: 1 record in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version CPE status
SoftIron HyperCloud Affected: 2.3.5 , < 2.6.9 (semver)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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