CVE-2026-70557: CWE-639 Authorization bypass through User-Controlled key in diboot diboot-core
diboot-core contains an authorization bypass vulnerability in its POST /common/load-related-data endpoint. This endpoint allows any authenticated user, including those with minimal privileges, to access sensitive fields from any entity without restriction. The security check intended to prevent unauthorized access always returns true, effectively disabling protection. As a result, secret fields such as admin password hashes can be retrieved and potentially cracked, leading to full administrative takeover. The vulnerable endpoint is used by the official diboot-admin-ui frontend, making this a significant risk in default deployments. No patch or official remediation has been published yet.
AI Analysis
Technical Summary
The diboot-core library's POST /common/load-related-data endpoint resolves user-supplied field names to any @TableField column of any entity and returns all rows' values without any allowlist filtering. The relatedDataSecurityCheck() function, which should enforce authorization, unconditionally returns true, allowing any authenticated user to read sensitive fields, including those annotated with @JsonIgnore such as IamAccount.authSecret and IamAccount.secretSalt. These fields contain password hashes protected by Shiro's two-iteration MD5 with an 8-character salt, which is easily crackable offline. Consequently, attackers can recover admin credentials and gain full administrative control. The vulnerability persists in the development branch under the renamed attachMore* mechanism, where attachMoreSecurityCheck() also returns true unconditionally. The official diboot-admin-ui frontend relies on this endpoint, exposing deployments that follow vendor recommendations. No official fix or patch is currently available.
Potential Impact
Any authenticated user, even with minimal privileges, can bypass authorization controls to access sensitive secret fields across all entities. This includes admin password hashes that can be cracked offline due to weak hashing, enabling full administrative takeover. The vulnerability compromises confidentiality and potentially leads to complete system compromise without requiring elevated privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the vulnerable endpoint by limiting authenticated user permissions or disabling the endpoint if possible. Review and harden authorization checks on endpoints that expose entity fields. Monitor vendor communications for official patches or updates.
CVE-2026-70557: CWE-639 Authorization bypass through User-Controlled key in diboot diboot-core
Description
diboot-core contains an authorization bypass vulnerability in its POST /common/load-related-data endpoint. This endpoint allows any authenticated user, including those with minimal privileges, to access sensitive fields from any entity without restriction. The security check intended to prevent unauthorized access always returns true, effectively disabling protection. As a result, secret fields such as admin password hashes can be retrieved and potentially cracked, leading to full administrative takeover. The vulnerable endpoint is used by the official diboot-admin-ui frontend, making this a significant risk in default deployments. No patch or official remediation has been published yet.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The diboot-core library's POST /common/load-related-data endpoint resolves user-supplied field names to any @TableField column of any entity and returns all rows' values without any allowlist filtering. The relatedDataSecurityCheck() function, which should enforce authorization, unconditionally returns true, allowing any authenticated user to read sensitive fields, including those annotated with @JsonIgnore such as IamAccount.authSecret and IamAccount.secretSalt. These fields contain password hashes protected by Shiro's two-iteration MD5 with an 8-character salt, which is easily crackable offline. Consequently, attackers can recover admin credentials and gain full administrative control. The vulnerability persists in the development branch under the renamed attachMore* mechanism, where attachMoreSecurityCheck() also returns true unconditionally. The official diboot-admin-ui frontend relies on this endpoint, exposing deployments that follow vendor recommendations. No official fix or patch is currently available.
Potential Impact
Any authenticated user, even with minimal privileges, can bypass authorization controls to access sensitive secret fields across all entities. This includes admin password hashes that can be cracked offline due to weak hashing, enabling full administrative takeover. The vulnerability compromises confidentiality and potentially leads to complete system compromise without requiring elevated privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the vulnerable endpoint by limiting authenticated user permissions or disabling the endpoint if possible. Review and harden authorization checks on endpoints that expose entity fields. Monitor vendor communications for official patches or updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-04T19:19:05.906Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a75070bbf8831d5395f5c45
Added to database: 08/06/2026, 22:13:31 UTC
Last enriched: 08/06/2026, 22:42:38 UTC
Last updated: 08/06/2026, 23:56:53 UTC
Views: 3
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