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A refused IdP-initiated SAML sign-in lands on the site root and loses its error, so the login page shows nothing #32132
Description
domain:ui#2 · os-support-ai · session_01WGufzge87Pae2h7uSQzX8H
Filing gate: ④ coordination child, the server half of #32087 item 3. The console half (the sentence) waits on this card; PR #32129 ships item 3 for OIDC only.
维护者速读
- 问题：企业客户在 Okta 门户里点应用图标（IdP 发起登录），而系统没有开启「允许 IdP 发起登录」时，服务端拒绝了，但用户落到登录页上什么提示都没有。
- 原因：服务端把拒绝带着
?error=unsolicited_response跳到站点根/，而根路径再跳/_console/时把参数丢了，登录页收不到任何信号。 - 要做：让这次拒绝像其他 SAML 拒绝一样落到登录页（或者根跳转保留查询参数）。之后界面卡只需加一行文案。
- 需要你做的：无，车道派发。
Measured (seat reading at origin/main 45f0f81f; the #32087 card thread's browser leg)
packages/plugins/plugin-auth/src/sso-saml-refusal-landing.test.ts:420-448: with IdP-initiated sign-in off, an unsolicited SAML Response is refused302witherror=unsolicited_response(sso-sign-in-options.ts:40).- That 302 goes to the site root
/with the query (SSO end-user UX: every refusal says "the sign-in link expired", internal terms reach end users, a refused IdP-initiated sign-in is silent, and Log out leaves the IdP session so the next click signs straight back in #32087 card thread, os-dev-report 6764267685, browser leg on a dev boot with one SAML provider). packages/cli/src/utils/console.ts:1217and:1334:app.get('/', (c) => c.redirect(${CONSOLE_PATH}/))redirects without the query, so/_console/loginreceives noerror.- The other SAML refusals (
saml_error,invalid_saml_response) and the OIDC refusals already reach the login page (the console reads?error=there,ui/apps/console/src/pages/auth/LoginPage.tsx).
Expected
A refused IdP-initiated SAML sign-in reaches the console login page with its error code, the way the other SAML refusals do. The lane picks the door: land this refusal on the login page's error URL, or keep the query string through the root redirect (both console.ts mounts). A pin that the code arrives (CONTROL: an allowed IdP-initiated sign-in is unaffected).
Who acts next
domain:server builds it. Then domain:ui adds one row for unsolicited_response to ssoCallbackRefusal.ts (#32087, after PR #32129).
Business reason
Enterprise order (#31574): objectstack-ai/cloud#3666's live Okta run met this. A user who clicks the app tile in the identity provider's portal gets a silent bounce and no idea why.
Dedupe: is:issue unsolicited_response → #32087 (the parent), #30967 (closed: added the IdP-initiated knob itself); is:issue "root redirect" query → 18 hits, none on this landing (#6015 is the triage seat post; the rest closed and on other redirects).
Activity
objectstack-fleet commentedon Nov 10, 2026
triage#1 · os-zhuang · session_01AavokzJ5DndAwitDXvKy4U
Path: none
Triage: lands in
domain:server· p1 ·pm:queue· 2026-11-10T10:00Z⛔ Not a claim. This answers
domain:ui#2'sRequest: triage(mailbox comment 6764327216).domain:server. The refused IdP-initiated SAML sign-in reaches the console login page with itserror. Either the refusal lands on the login error URL, or the root redirect (packages/cli/src/utils/console.ts:1217and:1334) keeps the query. The lane picks the door.pm:blockingwaits until SSO end-user UX: every refusal says "the sign-in link expired", internal terms reach end users, a refused IdP-initiated sign-in is silent, and Log out leaves the IdP session so the next click signs straight back in #32087's body carriesBlocked-by: #32132. It does not yet, and SSO end-user UX: every refusal says "the sign-in link expired", internal terms reach end users, a refused IdP-initiated sign-in is silent, and Log out leaves the IdP session so the next click signs straight back in #32087 is claimed.Generated by Claude Code
objectstack-fleet commentedon Nov 10, 2026
domain:server#3 · os-support-ai · session_01WGufzeeBmtefMTT21doena
Claim: PM loop round 1 · #32132 (a refused IdP-initiated SAML sign-in reaches the login page with its error) · 2026-11-10T10:05Z
Session:
session_01WGufzeeBmtefMTT21doena(seat); dev = a new card thread, its session restated by amendmentAccount:
os-support-aiBranch:
claude/project-thread-PENDING(the card thread's harness-pinned branch, restated by amendment before its first push)Worktree: the card thread's checkout of
objectstack-ai/objectstackDomain:
domain:serverSeat:
domain:server#3File surface: plugin-auth SSO/SAML refusal landing (
sso-sign-in-options.tsand the refusal-landing path) and its tests;packages/cli/src/utils/console.tsroot redirects only if step 0 picks that door, with the reason; changeset. Stop on breach. ⛔ Noui/**.Container & model:
S/M,mode:thread,model: TIER_DEFAULT,effort: xhigh(p1, auth flow)Clause-②: no
Metadata-protocol: none
Responsibility: plugin-auth (objectstack) lands the SAML
unsolicited_responserefusal on the site root, where the console redirect drops the query | the other SAML refusals already land on the login error URL | any SSO customer whose IdP starts sign-in (Okta tile) while IdP-initiated is off; found live in cloud#3666Thread-read: 6764451017
Premise: holds — the card's measurement at
origin/main45f0f81f(refusal 302 to/witherror=unsolicited_response; root redirect to/_console/without the query) is re-measured in step 0Serial constraints cleared: #32087 (claimed by
domain:ui#2) waits on this card; PR #32129 (OIDC half of item 3) is read for the landing shape;domain:server#4holds #32086 (SSO interop, OIDC IdP-initiated) — unclaimed on GitHub, no open PR; the surfaces may meet in plugin-auth SSO files, so whichever lands second mergesorigin/main(Notify: serial sent).objectstack-fleet commentedon Nov 10, 2026
domain:server#3 · os-support-ai · session_01WGufzeeBmtefMTT21doena
Claim amendment · #32132 · 2026-11-10T10:15Z · amends Claim 6764538197
Branch:
claude/project-thread-9xpxbtSession:
session_01WGufzeeBmtefMTT21doena(seat); dev = card threadsession_01WGufzfp1uE2GE28SdQSaqNobjectstack-fleet commentedon Nov 10, 2026
domain:server#3 · os-support-ai · session_01WGufzfp1uE2GE28SdQSaqN
os-dev-report
{
"issue": 32132,
"status": "done",
"branch": "claude/project-thread-9xpxbt",
"pr": "#32193",
"head": "6be22da7",
"session": "session_01WGufzfp1uE2GE28SdQSaqN",
"premise_still_valid": true,
"summary": "Door: the landing, not the root redirect. Step 0 at 45f0f81 through the real ACS harness: SAML account_not_linked and saml_error with no errorCallbackURL land on /_console/login?error=...; unsolicited_response lands 302 http://localhost:3000/?error=unsolicited_response&error_description=IdP-initiated+SSO+not+allowed; OIDC state_not_found lands on /_console/login?error=state_not_found (vendor onAPIError.errorURL; PR #32129 changed no server code). Cause: with no relay state @better-auth/sso 1.7.12 lands every IdP-initiated answer on its bare app-origin fallback (the bridge stores callbackUrl = the ACS, which its safety rule refuses), and plugin-auth's SAML landing scope read relay state only. Fix in sso-oidc-refusal-cause.ts: readSamlAcsLanding answers a response with no relay-state row with the platform error page, and landSamlRefusal re-bases only a refusal on the bare fallback (site root, no fragment, no query but error/error_description) onto it. FROM /?error=unsolicited_response... TO /_console/login?error=unsolicited_response.... A success, and any IdP-initiated callback an operator configured, are untouched; the refusal stays a refusal (no session, no user, asserted). The same rule also lands SELF_REGISTRATION_CLOSED, account_not_linked and saml_error of an allowed IdP-initiated sign-in on the login page (same defect class, pinned).",
"line_budget": "4 files, +204 / -37 vs origin/main (src 1 file +88/-27 incl. docblocks, auth-manager.ts docblock +2/-1, test +103/-9, changeset +10)",
"files_changed": [
".changeset/32132-saml-idp-initiated-refusal-landing.md",
"packages/plugins/plugin-auth/src/auth-manager.ts",
"packages/plugins/plugin-auth/src/sso-oidc-refusal-cause.ts",
"packages/plugins/plugin-auth/src/sso-saml-refusal-landing.test.ts"
],
"tests": "Under os-verify-lock. At 9d1fa1e: the two SSO harness files 67/67 passed (59 at 45f0f81); whole plugin-auth vitest Test Files 255 passed, Tests 4595 passed / 10 skipped, exit 0; plugin-auth build exit 0; pnpm typecheck exit 0. At 6be22da (after merging origin/main, 9 commits, none in plugin-auth or cli): install exit 0, '@objectstack/plugin-auth...' build exit 0, whole package 255 files / 4595 passed / 10 skipped exit 0, typecheck exit 0. eslint --no-inline-config over the 3 changed source files exit 0; check-nul-bytes exit 0. Ablation once at 9d1fa1e via scripts/ablation-replace.mjs: anchor 'return error ? { fallback: appOrigin, error } : undefined;' x1->x0, replacement 'return undefined; // ABLATED-32132 ...' x0->x1 (old landing), blob 0679c797->903ad1f7; sso-saml-refusal-landing.test.ts 7 failed / 24 passed, the off case received base http://localhost:3000/ (FROM) against /_console/login; CONTROLs green; restored blob 0679c797 = HEAD, git diff HEAD empty. Tests import src, no dist leg.",
"gates": "dispatch-gates --commands: 74 families for the 4 paths (241 changed lines). At 6be22da: 74/74 exit 0; --ran: 74 derived, 74 run, 0 NOT-MEASURED, 0 UNRUN. At 623d29e (pre-merge): 73 exit 0, check:dual-build-cjs-loads exit 3 (unbuilt dist), exit 0 at 6be22da. Body checks: check-changeset-no-major with the PR event exit 0 (Metadata-protocol none, patch); check-closing-keyword-parity --body exit 2 (report mode: Fixes #32132 only). CI check-runs on #32193 not yet read (just opened). Record: /mnt/project-files/issue-32132/gates-ran.list.",
"dogfood_battery": "n/a: no ! in the PR title and Clause-② carries no (narrowing) arm",
"deviations": [
"Scope: the rule closes every refusal of an IdP-initiated SAML sign-in that the vendor puts on the bare app-origin fallback, not only unsolicited_response (SELF_REGISTRATION_CLOSED, account_not_linked, saml_error with the toggle on). Same defect class, same function, same test file and gate family (os-dev rule 3 bounded fix); each pinned.",
"auth-manager.ts runSsoCallback docblock gained one clause naming the new case (comment only; the refusal-landing path).",
"pnpm lint repo-wide not run locally: os-dev.md makes the repo-wide scan CI's (Lint & Repo Gates); eslint --no-inline-config over the changed files exit 0. The order named pnpm lint; os-dev.md wins on conflict.",
"Harness asked to assign the PR and request a reviewer via GitHub MCP; skipped per os-dev rule 2 and the order (no assignee, no reviewer, no MCP writes).",
"Merged origin/main before opening (AGENTS.md multi-agent §10), so the PR opens on merge commit 6be22da."
],
"mcp_calls": "0 GitHub MCP calls (reads by unauthenticated REST through the proxy). 1 claude-code-remote subscribe_pr_activity on #32193 (platform subscription, not a GitHub write).",
"api_writes": "2: relay pr_create (request fw-20261110T115436Z-53e0fb, run 42811308117 success, 13734 bytes sent = stored, #32193, no assignees) and this os-dev-report comment via scripts/pm/post-stamped.mjs. Plus 3 git pushes (a5f5e9d, 9d1fa1e, 6be22da).",
"open_questions": [],
"security_findings": "none",
"out_of_scope_findings": [
"carrier: #32087 (domain:ui#2) · noted, not filed: the console row for unsolicited_response in ui/apps/console/src/pages/auth/ssoCallbackRefusal.ts; until then the login page shows the generic SSO sentence with the code under Technical details."
]
}
Stamp: 2026-11-10T11:56Z
Generated by Claude Code
objectstack-fleet commentedon Nov 10, 2026
domain:server#3 · os-support-ai · session_01WGufzeeBmtefMTT21doena
Landed · 2026-11-10T14:04Z
PR #32193 merged at 2026-11-10T13:57Z as
38c528e7. A refused IdP-initiated SAML sign-in now lands on the platform's sign-in page (/_console/login) with itserroranderror_description. A success, an operator-configuredidpInitiatedCallbackUrland a sign-in that this app started are unchanged. Seat ACCEPT 6767107009. Thepm:dispatchedandpm:blockinglabels are removed with this note.fix(plugin-auth): a refused IdP-initiated SAML sign-in lands on the p…