# NousResearch/hermes-agent · PKCE cookie encoding breaks OIDC login flow

## Open now

- Nothing open on GitHub.

A literal semicolon in the serialized PKCE state cookie causes failures at strict proxy hops or RFC 6265 parsers. These items address URL-encoding the cookie value to prevent it from being dropped or misread.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #99176. Verify it addresses your case.
- **Recommended:** read PR #99176 (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: `resolved` · deciding PR(s): `pr-99176`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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 `0.67`: 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.

## Closed / duplicate issues

- #83832: PKCE state cookie serialized with literal ';' breaks OIDC login

## Prior & competing PRs

- **#99176: fix(dashboard-auth): url-encode the PKCE cookie value so strict proxy hops stop dropping it**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `hermes_cli/dashboard_auth/cookies.py`, `hermes_cli/dashboard_auth/routes.py`, `tests/hermes_cli/test_dashboard_auth_cookies.py`, `tests/hermes_cli/test_dashboard_auth_native_flow.py`
- **#84065: fix(dashboard-auth): url-encode pkce cookie value to survive rfc 6265 split**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#99176`, `#83832`

## Fix status

- Merged to main in PR #99176 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-08-31`.
- Subsystem: `dashboard`