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`/raw` and `/dl` destroyed a burn-after-reading paste on a plain GET, so anything that follows a URL consumed it: a link unfurler, a prefetch, or an `<img>` on any page. Since `/md` runs a CSP that permits images, a paste holding `` made every viewer's browser destroy someone else's paste. Both routes return bytes to a GET with nowhere to confirm, so they refuse a burn paste with 403 instead of consuming it; the content stays reachable through the paste page, which asks first. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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/rawand/dldestroyed a burn-after-reading paste on a plain GET, so anything that follows a URL consumed it: a link unfurler, a prefetch, or an<img>on any page. Since/mdruns a CSP that permits images, a paste holdingmade every viewer's browser destroy someone else's paste.Both routes return bytes to a GET with nowhere to confirm, so they refuse a burn paste with 403 instead of consuming it; the content stays reachable through the paste page, which asks first.