GHSA-45m3-398w-m2m9
High · 7.5OliveTin has unauthenticated DoS via concurrent map writes in OAuth2 state handling
CVSS
7.5
EPSS
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Published
Mar 2, 2026
CISA due date
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The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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