vulnti.work

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The vacation "fcc" feature skips the destination-mailbox ACL. A user whose vacation Sieve script used :fcc (to save a copy of the …

Medium CVSS 5.4
CVECVE-2026-47082
First seen2026-07-17 19:16 UTC
Disclosed2026-07-16 19:16 UTC
Last updated2026-07-17 19:16 UTC
Channel statusauto

Summary

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The vacation "fcc" feature skips the destination-mailbox ACL. A user whose vacation Sieve script used :fcc (to save a copy of the sent message) could deliver vacation auto-reply copies into any mailbox the script could name, regardless of whether the script owner had insert permissions on the destination mailbox.

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Lint boundary warnings (2)

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://www.cyrusimap.org/imap/download/release-notes/index.html

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD