CVE-2026-27852
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
An attacker that can send mail to a user can craft a message whose headers contain a very large number of email addresses or MIME parameters, which causes excessive memory usage when the message is later parsed. The message is still delivered, but reading it over IMAP can exhaust the memory limit of the process and terminate it, causing denial of service for the affected user. Update to non-vulnerable version. No publicly available exploits are known.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
OX Dovecot Pro
- Vendor
- Open-Xchange GmbH
- Product
- OX Dovecot Pro
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.3.0 | affected | semver | 2.3.22.2 | Unavailable | None listed |
| 3.0.0 | affected | semver | 3.0.7 | Unavailable | None listed |
| 3.1.0 | affected | semver | 3.1.6 | Unavailable | None listed |
OX Dovecot CE
- Vendor
- Open-Xchange GmbH
- Product
- OX Dovecot CE
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.3.0 | affected | semver | 2.4.5 | Unavailable | None listed |