CVE-2026-48709
LowCVSS 3.7Exploitation Probability (EPSS)
Low risk18th percentile - higher than 18% of all known CVEs
Summary
OliveTin versions 3000.0.0 and prior allow access to predefined shell commands from a web interface. The ValidateArgumentType RPC endpoint does not perform any authentication or authorization checks, allowing unauthenticated users to enumerate valid action binding IDs and their argument configurations.
Risk Assessment
The lack of proper access controls may lead to the disclosure of sensitive information and allow attackers to exploit the system for unauthorized actions.
Recommendation
It is recommended to upgrade to version 3000.13.0, where the issue has been fixed, and to implement appropriate authentication and authorization checks for all API endpoints.
Other vulnerabilities in OliveTin
See all- CVE-2026-53541Medium
OliveTin before commit ebffd9f040f791208aee1db2e5a8aecd1e3e603d has a vulnerability that allows arguments whose names start with 'ot_' to bypass the filterToDefinedArgumentsOnly filter. These arguments are not type-checked, are set as environment variables and passed to executed commands, and are also available in the template context.
- CVE-2026-67439Medium
In OliveTin prior to version 3000.17.0, the StartActionAndWait and StartActionByGetAndWait endpoints return full LogEntry output without enforcing the logs permission, allowing users with exec but not logs permission to read action output.
- CVE-2026-67438Medium
In OliveTin from version 3000.2.0 to 3000.17.0, the checkShellArgumentSafety function does not treat 'regex:' custom argument types as unsafe for Shell mode, allowing OS command injection via interpolation into an sh -c command string.
- CVE-2026-67437High
OliveTin up to version 3000.17.0 stores OAuth2 login states in a map without expiration or size limits, allowing an unauthenticated attacker to exhaust memory and cause a denial of service (DoS).
- CVE-2026-48708High
OliveTin in versions 3000.0.0 and prior allows access to predefined shell commands from a web interface. The use of a shared template engine instance without synchronization leads to race conditions, resulting in cross-user command contamination and execution errors.
Original NVD description (English source)
OliveTin gives access to predefined shell commands from a web interface. In versions 3000.0.0 and prior, The ValidateArgumentType RPC endpoint in service/internal/api/api.go does not perform any authentication or authorization checks. Unlike all other data-returning API endpoints, it does not call auth.UserFromApiCall or checkDashboardAccess. When AuthRequireGuestsToLogin is enabled (the security-conscious configuration), this endpoint remains accessible to unauthenticated users and can be used as an oracle to enumerate valid action binding IDs and their argument configurations. This issue has been fixed in version 3000.13.0.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS