I just recevied an DMCA takedown from GitHub because upstream is “unopensourced”
Not a lawyer but,<p>If it was released under an open source license by people who did not legally have permission to change the license, then yes this is possible.<p>It sucks, and you should likely still challenge it. But they may have the legal high ground.<p>It&#x27;s like if a stolen painting is given away or sold. The recipient is may have no knowledge the painting is stolen and acting in good faith. But the original owners before it was stolen are still the legal owners.