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GHSA-228v-wc5r-j8m7

HighCVSS 7.1 / 10
Published Mar 12, 2026·Last modified Mar 25, 2026
Affected Components(0)

No affected components available

Description

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 internalLogEntryToPb
  • service/internal/api/api.go:302 Output

By contrast, the normal log APIs do apply per-action authorization checks:

  • service/internal/api/api.go:518 GetLogs
  • service/internal/api/api.go:585 GetActionLogs
  • service/internal/api/api.go:544 isLogEntryAllowed

Root cause:

  • the subscription path enforces only coarse dashboard access
  • execution callbacks broadcast to every connected client
  • no per-recipient ACL check is applied before sending action metadata or output

I validated the issue using:

  • an admin user with full ACLs
  • an alice user with no ACLs
  • a protected action that outputs TOPSECRET=alpha-bravo-charlie

Despite having no relevant ACLs, alice still receives the ExecutionFinished event for the privileged action, including the protected output.

PoC

Tested version:

  - 3000.10.2
  1. Fetch and check out 3000.10.2 in a clean worktree:
  git -C OliveTin fetch origin tag 3000.10.2
  git -C OliveTin worktree add /home/kali/CVE/OliveTin-3000.10.2 3000.10.2
  1. Copy the PoC test into the clean tree:
  cp OliveTin/service/internal/api/event_stream_leak_test.go \
    OliveTin-3000.10.2/service/internal/api/
  1. Run the targeted PoC test:
  cd OliveTin-3000.10.2/service
  go test ./internal/api -run TestEventStreamLeaksUnauthorizedExecutionOutput -count=1 -timeout 30s -v
  1. Optional: save validation output:
  go test ./internal/api -run TestEventStreamLeaksUnauthorizedExecutionOutput -count=1 -timeout 30s -v \
    2>&1 | tee /tmp/olivetin_eventstream_3000.10.2.log

Observed validation output:

  === RUN   TestEventStreamLeaksUnauthorizedExecutionOutput
  time="2026-03-01T04:44:59-05:00" level=info msg="Action requested" actionTitle=secret-action tags="[]"
  time="2026-03-01T04:44:59-05:00" level=info msg="Action parse args - Before" actionTitle=secret-action cmd="echo 'TOPSECRET=alpha-bravo-charlie'"
  time="2026-03-01T04:44:59-05:00" level=info msg="Action parse args - After" actionTitle=secret-action cmd="echo 'TOPSECRET=alpha-bravo-charlie'"
  time="2026-03-01T04:44:59-05:00" level=info msg="Action started" actionTitle=secret-action timeout=1
  time="2026-03-01T04:44:59-05:00" level=info msg="Action finished" actionTitle=secret-action exit=0 outputLength=30 timedOut=false
  --- PASS: TestEventStreamLeaksUnauthorizedExecutionOutput (0.00s)
  PASS
  ok      github.com/OliveTin/OliveTin/internal/api       0.025s

What this proves:

  • admin can execute the protected action
  • alice has no ACLs
  • alice still receives the streamed completion event for the protected action
  • protected action output is exposed through the event stream

Impact

This is an authenticated broken access control / information disclosure vulnerability.

A low-privileged authenticated user can subscribe to EventStream and receive:

  • action execution metadata
  • execution tracking IDs
  • initiating username
  • live output chunks
  • final command output

Who is impacted:

  • multi-user OliveTin deployments
  • environments where privileged actions produce secrets, tokens, internal system details, or other sensitive operational output
  • deployments where lower-privileged authenticated users can access the dashboard and subscribe to live events

This bypasses intended per-action log/view restrictions for protected actions.

Risk Scores
Base Score
7.1

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
4.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.43%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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