Medium · published March 27, 2026
Dovecot has provided a script to use for attachment to text conversion. This script unsafely handles zip-style attachments. Attacker can use specially crafted OOXML documents to cause unintended files on the system to be indexed and subsequently ending up in FTS indexes. Do not use the provided script, instead, use something else like FTS tika. No publicly available exploits are known.
| Product | Versions | Fixed in |
|---|---|---|
| dovecot/dovecot | < 2.4.3 | 2.4.3 |
| open-xchange/dovecot | < 2.3.22.1 | 2.3.22.1 |
| open-xchange/dovecot | ≥ 3.0.0, < 3.1.3 | 3.1.3 |