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mime-spoofing

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Astaruf / CVE-2026-40487

CVE-2026-40487 | Postiz <= 2.21.5 | Arbitrary File Upload via MIME-Type Spoofing → Stored XSS → Account Takeover | CVSS 8.9 High

security exploit file-upload xss poc vulnerability cve account-takeover stored-xss postiz mime-spoofing cve-2026-40487

Updated Apr 16, 2026
Python

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