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fix(auctions): submissions got Forbidden in Chrome - #152

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sh1pt-actions-fleet[bot] merged 1 commit into
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auctions-origin-null
Nov 3, 2026
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sh1pt-actions-fleet[bot] merged 1 commit into
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auctions-origin-null

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The site sends Referrer-Policy: no-referrer, under which Chrome posts forms with Origin: null. The CSRF check parsed that as a URL, failed, and returned 403 Forbidden for every real browser submission. Origin: null is now accepted only together with Sec-Fetch-Site: same-origin (browser-set, not forgeable by a page); null with cross-site or no fetch-site header is still 403. Test covers all three.

🤖 Generated with Claude Code

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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sh1pt-actions-fleet Bot merged commit be9ecfa into main Nov 3, 2026
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sh1pt-actions-fleet Bot deleted the auctions-origin-null branch November 3, 2026 08:39
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