# 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.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 29 Jul 2026
- **Updated:** 30 Jul 2026
- **Also known as:** GHSA-jm28-2wcr-qf3h, GO-2026-6144

## 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 (Incorrect Authorization)

## Which versions are affected by CVE-2026-67439?

3 open source packages ship an affected version, including github.com/OliveTin/OliveTin.


| Package | Ecosystem | 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.

## Is CVE-2026-67439 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67439 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-67439 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67439 exists.

Affected packages and fixed versions:
- github.com/OliveTin/OliveTin (Go): affected all versions; fixed in 0.0.0-20260708085316-e421780c9885
- github.com/OliveTin/OliveTin (Go): affected all versions; fixed in 0.0.0-20260708085316-e421780c9885
- github.com/OliveTin/OliveTin (Go): affected all versions; fixed in 0.0.0-20260708085316-e421780c9885

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-67439/ (Markdown: https://insights.sbomify.com/CVE-2026-67439/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-67439
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-67439
- OSV: https://osv.dev/vulnerability/CVE-2026-67439

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-67439/
Summaries are generated and may contain mistakes; the official description above is the record.