Vulnerability · Published Mar 5, 2026 · Assigned by GitHub_M
CVE-2026-28789OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling
High 7.5
In plain English
A high-severity race condition in OliveTin from OliveTin. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/OliveTin/OliveTin | 0.0.0-20260301235225-f044d90d5525c | GHSA-45m3-398w-m2m9 |
| Go | github.com/OliveTin/OliveTin | no fix listed | GO-2026-4586 |
Affected products (as reported)
Weakness: CWE-362, CWE-662, CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H