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curl: A server response that answers nothing is used as the next transfer's reply — and with IMAP, a fully compliant server does this by accident

🗓️ 20 Oct 2026 16:25:48Reported by jashu19Type 
hackerone
 hackerone🔗 hackerone.com👁 2 Views

Response misattribution in curl across IMAP, POP3, SMTP, and FTP transfers.

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22 Oct 2026 06:55Current
6.7Medium risk
Vulners AI Score6.7
CVSS 3.15.9
CVSS 24.3
EPSS0.03898
SSVC
curllibcurlIMAPPOP3SMTPFTP
2