OliveTin Vulnerable to Unauthorized Action Output Disclosure via EventStream

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2026-32102: 0.46% estimated exploitation activity in the next 30 days; percentile 39.74 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary OliveTin’s live EventStream broadcasts execution events and action output to authenticated dashboard subscribers without enforcing per-action authorization. A low-privileged authenticated user can receive output from actions they are not allowed to view, resulting in broken access control and sensitive information disclosure. I validated this on OliveTin 3000.10.2. Details The issue is in the live event streaming path. EventStream() only checks whether the caller may access the dashboard, then registers the user as a stream subscriber: - service/internal/api/api.go:776 After subscription, execution events are broadcast to all connected clients without checking whether each recipient is authorized to view logs for the action: - service/internal/api/api.go:846 OnExecutionStarted - service/internal/api/api.go:869 OnExecutionFinished - service/internal/api/api.go:1047 OnOutputChunk The event payload includes action output through: - service/internal/api/api.go:295…

Published by the source

12 Mar 2026, 14:20 UTC

Last modified by the source

12 Mar 2026, 14:21 UTC

Source last checked

26 Oct 2026, 15:18 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-228v-wc5r-j8m7

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# Patch Next advisory brief: CVE-2026-32102

Advisory: OliveTin Vulnerable to Unauthorized Action Output Disclosure via EventStream
IDs: CVE-2026-32102, GHSA-228v-wc5r-j8m7
Record: https://patchnext.com/advisories/cve-2026-32102 (revision 1, source checked 26 Oct 2026, 15:18 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/OliveTin/OliveTin 3000.10.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/OliveTin/OliveTin: affected < 3000.10.2; fixed in 3000.10.2

## Suggested inspection (read-only)
- Go github.com/OliveTin/OliveTin: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/OliveTin/OliveTin.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-228v-wc5r-j8m7 (GitHub-reviewed advisory GHSA-228v-wc5r-j8m7 lists affected ranges: Go github.com/OliveTin/OliveTin >=0 <3000.10.2)

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