CVE-2026-28789

OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling

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

OliveTin

CVSS v3.1 GITHUB

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.49% chance of exploitation in the next 30 days, 41st percentile

Published

2026-03-05

Updated

2026-03-06

Proof-of-concept exploits (1)

• advisories/GHSA-45m3-398w-m2m9

Security advisories

• OliveTin/OliveTin/security/advisories/GHSA-45m3-398w-m2m9
• OliveTin/OliveTin/commit/f044d90d5525c4c8e3f421b32ed7eff771c22d36

References

• CVE Record
• NVD entry