CVE-2026-67439 OliveTin: StartActionAndWait Endpoints Bypass `logs` Permission and Return Action Output
Attackers with execution permissions can bypass logging restrictions to read sensitive action output in OliveTin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-67439?
CVE-2026-67439 is a medium-severity missing authorization vulnerability in OliveTin, published on 29 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
OliveTin gives safe and simple access to predefined shell commands from a web interface. Prior to 3000.17.0, the service/internal/api/api.go StartActionAndWait and StartActionByGetAndWait endpoints return full LogEntry output after execution without enforcing the logs permission, allowing a user with exec permission but logs:false to read action output. This issue is fixed in version 3000.17.0.
Weakness: CWE-863
Which versions are affected by CVE-2026-67439?
3 open source packages ship an affected version, including github.com/OliveTin/OliveTin.
| Package | Affected | Fixed in |
|---|---|---|
github.com/OliveTin/OliveTin Go | All versions | 0.0.0-20260708085316-e421780c9885 |
github.com/OliveTin/OliveTin Go | All versions | 0.0.0-20260708085316-e421780c9885 |
github.com/OliveTin/OliveTin Go | All versions | 0.0.0-20260708085316-e421780c9885 |
How do I fix CVE-2026-67439?
Upgrade github.com/OliveTin/OliveTin to 0.0.0-20260708085316-e421780c9885 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-67439 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67439 exists.
Sources
Also known as GHSA-jm28-2wcr-qf3h, GO-2026-6144.