MCP OAuth crash from malformed cached redirect_uris
Cluster 112568. Data as of
Nothing open on GitHub. Fix merged in #113786 on 17 Sep 2026. Check it covers your case.
The short answer
- Known?
- Yes. 4 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #113786. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #113786. That is separate from the fix event. - Still open
- Nothing open on GitHub.
A bug was identified where malformed redirect_uris entries in the cached OAuth client.json caused the MCP OAuth login flow to crash on every attempt. Multiple fixes address skipping or handling these malformed entries to prevent the crash.
Open issues0
Open PRs0
Fixes on record
-
#113068 fix(mcp): malformed cached OAuth redirect_uris no longer crash the login flow (#112568, salvage #112569)
files:
tests/tools/test_mcp_oauth.py,tools/mcp_oauth.py -
#113786 fix(mcp): poisoned client.json is covered end-to-end on the OAuth login path (closes remaining atoms of #112568)
files:
tests/tools/test_mcp_oauth.py
1 PR closed without merging
From the close comments: merged via another change 1
-
#112569 fix(mcp): skip malformed cached OAuth redirect_uris instead of crashing · merged via another change →
f8f89b2,e166791,#113068
Closed issues · 1
- Closed#112568[Bug]: MCP OAuth: malformed cached redirect_uris entry crashes the OAuth flow every attempt
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structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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
0.50: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36.1.00means every pair is linked.
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