OliveTin up to 3000.10.2 /oauth/login race condition

Summaryinfo

A vulnerability was found in OliveTin up to 3000.10.2. It has been declared as problematic. The affected element is an unknown function of the file /oauth/login. The manipulation results in race condition. This vulnerability was named CVE-2026-28789. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in OliveTin up to 3000.10.2. It has been classified as problematic. Affected is some unknown processing of the file /oauth/login. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on availability. CVE summarizes:

OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.10.3, an unauthenticated denial-of-service vulnerability exists in OliveTin’s OAuth2 login flow. Concurrent requests to /oauth/login can trigger unsynchronized access to a shared registeredStates map, causing a Go runtime panic (fatal error: concurrent map writes) and process termination. This allows remote attackers to crash the service when OAuth2 is enabled. This issue has been patched in version 3000.10.3.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-28789 since 03/03/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

Upgrading to version 3000.10.3 eliminates this vulnerability. Applying the patch f044d90d5525c4c8e3f421b32ed7eff771c22d36 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• OliveTin

Version

• 3000.10.0
• 3000.10.1
• 3000.10.2

License

• open-source

Website

• Product: https://github.com/OliveTin/OliveTin/

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