High 7.5Published Mar 5, 2026

CVE-2026-28789OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling

Updated under an hour ago (Oct 27, 2026, 9:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for OliveTin

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-362, CWE-662, CWE-400
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

OliveTin OliveTin olivetin:olivetin (from the name)	before 3000.10.3	CNA record
olivetin olivetin olivetin:olivetin	through 3000.10.2	NVD

References

References

https://github.com/OliveTin/OliveTin/security/advisories/GHSA-45m3-398w-m2m9	x-refsource-confirm, exploit, vendor-advisory
https://github.com/OliveTin/OliveTin/commit/f044d90d5525c4c8e3f421b32ed7eff771c22d36	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.