{"id":"CVE-2026-28789","aliases":["GHSA-45m3-398w-m2m9","GO-2026-4586"],"url":"https://o3.security/vulnerability/CVE-2026-28789","summary":"OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling","details":"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.","published":"2026-03-05T19:33:46.924Z","modified":"2026-08-07T11:50:15.172487890Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/OliveTin/OliveTin","fixedVersion":"0.0.0-20260301235225-f044d90d5525c"}],"fix":{"url":"https://github.com/OliveTin/OliveTin/commit/f044d90d5525c4c8e3f421b32ed7eff771c22d36","label":"OliveTin/OliveTin@f044d90"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28789.json"},{"type":"ADVISORY","url":"https://github.com/OliveTin/OliveTin/security/advisories/GHSA-45m3-398w-m2m9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28789"},{"type":"FIX","url":"https://github.com/OliveTin/OliveTin/commit/f044d90d5525c4c8e3f421b32ed7eff771c22d36"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:50:15.172487890Z"}}