Vulnerabilidades de Stalwartlabs
CVEs publicadas que afetam produtos de Stalwartlabs: 2 registro(s), com severidade, exploração e correções.
CVE-2026-26312
Média · 6.5
CWE-770 19/02/2026
Stalwart Mail Server has Out-of-Memory Denial of Service via Malformed Nested MIME Messages
Stalwart is a mail and collaboration server. A denial-of-service vulnerability exists in Stalwart Mail Server versions 0.13.0 through 0.15.4 where accessing a specially crafted email containing malformed nested `message/rfc822` MIME parts via IMAP or JMAP causes excessive CPU and memory consumption, potentially leading to an out-of-memory condition and server crash. The malformed structure causes the `mail-parser` crate to produce cyclical references in its parsed representation, which Stalwart then follows indefinitely. Version 0.15.5 contains a patch.
CVE-2025-61600
Alta · 7.5
CWE-400 02/10/2025
Unbounded Memory Allocation in Stalwart IMAP parser
Stalwart is a mail and collaboration server. Versions 0.13.3 and below contain an unbounded memory allocation vulnerability in the IMAP protocol parser which allows remote attackers to exhaust server memory, potentially triggering the system's out-of-memory (OOM) killer and causing a denial of service. The CommandParser implementation enforces size limits on its dynamic buffer in most parsing states, but several state handlers omit these validation checks. This issue is fixed in version 0.13.4. A workaround for this issue is to implement rate limiting and connection monitoring at the network level, however this does not provide complete protection.