Detections
Analytics
CVE-2026-87864
high
Description
Enabling `CURLOPT_CRLF` causes curl to advertise the raw input byte count in the `IMAP APPEND {N}` literal while transmitting line-ending expanded data. The server reads only $N$ bytes for the payload, causing the remaining overflow bytes to be interpreted and executed as pipelined IMAP commands within the authenticated session.
References
https://hackerone.com/reports/3972403
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-105310