Auth bypass in Olivetin
CVE-2026-28790
OliveTin gives access to predefined shell commands from a web interface. Prior to version 3000.11.0, OliveTin allows an unauthenticated guest to terminate running actions through KillAction even when authRequireGuestsToLogin: true is enabled. Guests are correctly blocked from dashboard access, but can still call the KillAction RPC directly and successfully stop a running action. This is a broken access control issue that causes unauthorized denial of service against legitimate action executions. This issue has been patched in version 3000.11.0.
Published · last modified .
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: 0.008 (54.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.001
Affected products
- Olivetin — versions < 3000.11.0
Weakness classification (CWE)
References
- github.com/OliveTin/OliveTin/security/advisories/GHSA-4fqm-6fmh-82mq (Exploit, Vendor Advisory)
- github.com/OliveTin/OliveTin/commit/d9804182eae43cf49f735e6533ddbe1541c2b9a9 (Patch)
- github.com/OliveTin/OliveTin/releases/tag/3000.11.0 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-28790?
- CVE-2026-28790 is a high-severity vulnerability in Olivetin, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-03-05.
- How severe is CVE-2026-28790?
- High severity. CVSS v3 base score is 7.5 out of 10.