What is CVE-2026-28789?

CVE-2026-28789 is a high-severity vulnerability in Olivetin, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.5/10. Published 2026-03-05.

How severe is CVE-2026-28789?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Olivetin

CVE-2026-28789

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.

Vulnerability class: Race Condition

Published 2026-03-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Olivetin — versions < 3000.10.3

Weakness classification (CWE)

References

github.com/OliveTin/OliveTin/security/advisories/GHSA-45m3-398w-m2m9 (Exploit, Vendor Advisory)
github.com/OliveTin/OliveTin/commit/f044d90d5525c4c8e3f421b32ed7eff771c22d36 (Patch)

Frequently asked questions

What is CVE-2026-28789?: CVE-2026-28789 is a high-severity vulnerability in Olivetin, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.5/10. Published 2026-03-05.
How severe is CVE-2026-28789?: High severity. CVSS v3 base score is 7.5 out of 10.