CVE-2026-32102: Github.com/OliveTin/OliveTin OliveTin Vulnerable To Unauthorized Action Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-228v-wc5r-j8m7",
  "modified" : "2026-03-12T14:21:00Z",
  "published" : "2026-03-12T14:20:16Z",
  "aliases" : [ "CVE-2026-32102" ],
  "summary" : "OliveTin Vulnerable to Unauthorized Action Output Disclosure via EventStream",
  "details" : "### Summary\n\n  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\n  not allowed to view, resulting in broken access control and sensitive information disclosure. I validated this on OliveTin 3000.10.2.\n\n\n\n\n### Details\nThe issue is in the live event streaming path.\n\n  EventStream() only checks whether the caller may access the dashboard, then registers the user as a stream subscriber:\n\n  - service/internal/api/api.go:776\n\n  After subscription, execution events are broadcast to all connected clients without checking whether each recipient is authorized to view logs for the action:\n\n  - service/internal/api/api.go:846 OnExecutionStarted\n  - service/internal/api/api.go:869 OnExecutionFinished\n  - service/internal/api/api.go:1047 OnOutputChunk\n\n  The event payload includes action output through:\n\n  - service/internal/api/api.go:295 internalLogEntryToPb\n  - service/internal/api/api.go:302 Output\n\n  By contrast, the normal log APIs do apply per-action authorization checks:\n\n  - service/internal/api/api.go:518 GetLogs\n  - service/internal/api/api.go:585 GetActionLogs\n  - service/internal/api/api.go:544 isLogEntryAllowed\n\n  Root cause:\n\n  - the subscription path enforces only coarse dashboard access\n  - execution callbacks broadcast to every connected client\n  - no per-recipient ACL check is applied before sending action metadata or output\n\n  I validated the issue using:\n\n  - an admin user with full ACLs\n  - an alice user with no ACLs\n  - a protected action that outputs TOPSECRET=alpha-bravo-charlie\n\n  Despite having no relevant ACLs, alice still receives the ExecutionFinished event for the privileged action, including the protected output.\n\n\n\n### PoC\nTested version:\n```\n  - 3000.10.2\n```\n  1. Fetch and check out 3000.10.2 in a clean worktree:\n```bash\n  git -C OliveTin fetch origin tag 3000.10.2\n  git -C OliveTin worktree add /home/kali/CVE/OliveTin-3000.10.2 3000.10.2\n```\n  2. Copy the PoC test into the clean tree:\n```bash\n  cp OliveTin/service/internal/api/event_stream_leak_test.go \\\n    OliveTin-3000.10.2/service/internal/api/\n```\n  3. Run the targeted PoC test:\n```bash\n  cd OliveTin-3000.10.2/service\n  go test ./internal/api -run TestEventStreamLeaksUnauthorizedExecutionOutput -count=1 -timeout 30s -v\n```\n  4. Optional: save validation output:\n```bash\n  go test ./internal/api -run TestEventStreamLeaksUnauthorizedExecutionOutput -count=1 -timeout 30s -v \\\n    2>&1 | tee /tmp/olivetin_eventstream_3000.10.2.log\n```\n  Observed validation output:\n```bash\n  === RUN   TestEventStreamLeaksUnauthorizedExecutionOutput\n  time=\"2026-03-01T04:44:59-05:00\" level=info msg=\"Action requested\" actionTitle=secret-action tags=\"[]\"\n  time=\"2026-03-01T04:44:59-05:00\" level=info msg=\"Action parse args - Before\" actionTitle=secret-action cmd=\"echo 'TOPSECRET=alpha-bravo-charlie'\"\n  time=\"2026-03-01T04:44:59-05:00\" level=info msg=\"Action parse args - After\" actionTitle=secret-action cmd=\"echo 'TOPSECRET=alpha-bravo-charlie'\"\n  time=\"2026-03-01T04:44:59-05:00\" level=info msg=\"Action started\" actionTitle=secret-action timeout=1\n  time=\"2026-03-01T04:44:59-05:00\" level=info msg=\"Action finished\" actionTitle=secret-action exit=0 outputLength=30 timedOut=false\n  --- PASS: TestEventStreamLeaksUnauthorizedExecutionOutput (0.00s)\n  PASS\n  ok      github.com/OliveTin/OliveTin/internal/api       0.025s\n```\n  What this proves:\n\n  - admin can execute the protected action\n  - alice has no ACLs\n  - alice still receives the streamed completion event for the protected action\n  - protected action output is exposed through the event stream\n\n\n### Impact\n  This is an authenticated broken access control / information disclosure vulnerability.\n\n  A low-privileged authenticated user can subscribe to EventStream and receive:\n\n  - action execution metadata\n  - execution tracking IDs\n  - initiating username\n  - live output chunks\n  - final command output\n\n  Who is impacted:\n\n  - multi-user OliveTin deployments\n  - environments where privileged actions produce secrets, tokens, internal system details, or other sensitive operational output\n  - deployments where lower-privileged authenticated users can access the dashboard and subscribe to live events\n\n  This bypasses intended per-action log/view restrictions for protected actions.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/OliveTin/OliveTin"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3000.10.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/OliveTin/OliveTin/security/advisories/GHSA-228v-wc5r-j8m7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-32102"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/OliveTin/OliveTin"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284", "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-12T14:20:16Z",
    "nvd_published_at" : "2026-03-11T21:16:16Z"
  }
}