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{"schema_version":"1.9.0","id":"GHSA-228v-wc5r-j8m7","published":"2026-03-12T14:20:16Z","modified":"2026-03-25T05:16:42.401433Z","aliases":["CVE-2026-32102","GO-2026-4683"],"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.","affected":[{"package":{"name":"github.com/OliveTin/OliveTin","ecosystem":"Go","purl":"pkg:golang/github.com/OliveTin/OliveTin"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3000.10.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-228v-wc5r-j8m7/GHSA-228v-wc5r-j8m7.json"}}],"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"],"github_reviewed":true,"github_reviewed_at":"2026-03-12T14:20:16Z","nvd_published_at":"2026-03-11T21:16:16Z","severity":"HIGH"},"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"}]} |