# NousResearch/hermes-agent · CDP session conflicts with multiple browser sessions

## Open now

- 1 issue, 1 PR open on GitHub.
- #69727: \[Bug\]: In version 0.19, there is a conflict issue when multiple sessions control the browser simultaneously
- PR #86879: fix(browser): fence task lifecycle and pin exact CDP targets

A bug where multiple simultaneous sessions controlling the browser via CDP interfere with each other. Two fixes address this by isolating page targets and pinning shared CDP sessions to specific tabs.

## TL;DR

- 4 member(s): 1 open issue(s), 0 closed issue(s), 1 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #143146. Verify it addresses your case.
- **Recommended:** read PR #143146 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `unresolved`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.50`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Open related issues

- #69727: \[Bug\]: In version 0.19, there is a conflict issue when multiple sessions control the browser simultaneously

## Prior & competing PRs

- **#143146: Browser automation runs on browser_exec only; agent-browser and the built-in browser tools are gone (Camofox moves to a plugin)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `.env.example`, `CONTRIBUTING.md`, `Dockerfile`, `acp_adapter/entry.py`, `agent/browser_provider.py`, `agent/browser_registry.py`, `agent/chat_completion_helpers.py`, `agent/display.py`, `agent/learn_prompt.py`, `agent/transports/hermes_tools_mcp_server.py`, `apps/desktop/scripts/audit-bundle-arch.mjs`, `apps/desktop/scripts/audit-bundle-arch.test.mjs`, `apps/desktop/src/app/session/hooks/use-prompt-actions/browser-manage.test.tsx`, `apps/desktop/src/app/session/hooks/use-prompt-actions/index.test.tsx`, `apps/desktop/src/app/session/hooks/use-prompt-actions/slash-desktop-commands.test.tsx`, `apps/desktop/src/app/session/hooks/use-prompt-actions/slash.ts`, `apps/desktop/src/app/settings/toolset-config-panel.test.tsx`, `apps/desktop/src/app/settings/toolset-config-panel.tsx`, `apps/desktop/src/app/types.ts`, `apps/desktop/src/i18n/ar_chat.ts` (+511 more)
- **#75597: fix(browser): give each CDP supervisor its own page target**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `#143146`, `#75597`
- **#86879: fix(browser): fence task lifecycle and pin exact CDP targets**. open
  - maintainer direction: category `implemented_elsewhere`; implication `superseded`; refs `22a0771bdd`, `4cca38be86`, `90e916efc9`
  - files: `agent/browser_turn_cleanup.py`, `agent/chat_completion_helpers.py`, `agent/turn_facade.py`, `pm/lock.json`, `tests/tools/live_browser/cdp_discovery_proxy.py`, `tests/tools/live_browser/chrome_runtime.py`, `tests/tools/live_browser/test_native_owned_cdp.py`, `tests/tools/test_browser_cdp_pinning.py`, `tests/tools/test_browser_cleanup.py`, `tests/tools/test_browser_eval_supervisor_path.py`, `tests/tools/test_browser_exact_target_close.py`, `tests/tools/test_browser_headed_mode.py`, `tests/tools/test_browser_hybrid_routing.py`, `tests/tools/test_browser_lifecycle_fail_closed.py`, `tests/tools/test_browser_orphan_reaper.py`, `tests/tools/test_browser_pm.py`, `tests/tools/test_browser_supervisor.py`, `tests/tools/test_browser_supervisor_healthcheck.py`, `tests/tools/test_browser_use_session_expiry.py`, `tools/browser_camofox.py` (+10 more)

## Fix status

- Merged to main in PR #143146 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-10-23`.
- Subsystem: `agent`