CVE-2026-28790 OliveTin: Unauthenticated Action Termination via KillAction When Guests Must Login
Unauthenticated guests can terminate running actions in OliveTin despite login requirements, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-28790?
CVE-2026-28790 is a high-severity missing authorization vulnerability in OliveTin, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-28790?
3 open source packages ship an affected version, including github.com/OliveTin/OliveTin. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/OliveTin/OliveTin Go | All versions | 0.0.0-20260302002902-d9804182eae4 |
github.com/OliveTin/OliveTin Go | All versions | 0.0.0-20260302002902-d9804182eae4 |
github.com/OliveTin/OliveTin Go | All versions | 0.0.0-20260302002902-d9804182eae4 |
Products include Olivetin Olivetin.
How do I fix CVE-2026-28790?
Upgrade github.com/OliveTin/OliveTin to 0.0.0-20260302002902-d9804182eae4 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-28790 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-28790 exists.
Other vulnerabilities in OliveTin
- CVE-2026-27626 OliveTin: OS Command Injection via `password` argument type and webhook JSON extraction bypasses shell safety checks
- CVE-2026-30223 OliveTin: JWT Audience Validation Bypass in Local Key and HMAC Modes
- CVE-2026-31817 OliveTin's unsafe parsing of UniqueTrackingId can be used to write files
- CVE-2026-28342 OliveTin: Unauthenticated Denial of Service via Memory Exhaustion in PasswordHash API Endpoint
- CVE-2026-28789 OliveTin: Unauthenticated DoS via concurrent map writes in OAuth2 state handling
Sources
Also known as GHSA-4fqm-6fmh-82mq, GO-2026-4587.