NousResearch/hermes-agent

MCP strict_redirect_headers enforcement bug and fix

Cluster 115155. Data as of 2026-10-26 12:29 UTC

Nothing open on GitHub. Fix merged in #116738 on 20 Sep 2026. Check it covers your case.

open issues

open PRs

items grouped

Known?: Yes. 3 related items grouped here, 1 issue already closed.
Fix event: A fix was merged to main in PR #116738. Check it covers your case. No release data is tracked.
Tracker: The maintainers' tracker marks this resolved, deciding PR #116738. That is separate from the fix event.
Still open: Nothing open on GitHub.

Next step: read #116738, then check it covers your case.

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A bug was identified where strict_redirect_headers failed to strip configured headers on cross-origin redirects, including the MCP preflight probe. Related fixes address enforcing this stripping behavior correctly.

Open issues0

No open issues.

Open PRs0

No open pull requests.

Fixes on record

Merged to main. A stamp counts the issues a fix is linked to.

#116738 fix(mcp): strict_redirect_headers really strips configured headers on cross-origin redirects, preflight probe included (#115155, salvage #115158)

merged to main

files: tests/tools/test_mcp_preflight_content_type.py, tests/tools/test_mcp_tool.py, tools/mcp_tool_errors.py, tools/mcp_tool_server_run.py, tools/mcp_tool_transport.py

1 PR closed without merging

From the close comments: merged via another change 1

#115158 fix(mcp): enforce strict_redirect_headers on redirects and the preflight probe · merged via another change → 3ac4f26, #116738, #115155, #115158

Closed issues · 1

Closed#115155[Bug]: strict_redirect_headers never strips configured headers — dead response hook — and MCP preflight probe leaks configured headers across redirects

How this cluster was grouped

Link evidence (structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
Pairwise link density 0.67: the share of item 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.

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At a glance

Merged PRs: #116738
Closed issues: 1
Attempts: 1 PR closed without merging
Fix link checked: 20 Sep 2026

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cluster/115155.json
cluster/115155.md